Most SDRs learn the job by doing it: shadowing an AE's calls, rewriting a sequence after it falls flat, replaying a discovery call that went sideways. That works for the seat you're in. It's slower for the seat you want, because nobody hands you the account executive skills list until you're in it.
The takeaway up front: start free sales training from your role's skill stack, not from a course list. Write down the skills behind the job you hold, put them next to the skills behind the job you want, and spend your study time on the difference. Then practise each new skill on this week's real calls and emails.
Where to find free training for your profession
You can build that map by hand from job ads and your manager's scorecard. A quicker first draft comes from SkillCache, a library of free and paid learning resources organised by skill. It sends you to each provider's own page rather than hosting the course. At the time of writing, SkillCache holds 2,104 resources across 63 skills, 1,832 of them tagged free.
Its Browse by Profession page flips the usual question: instead of picking a course, you pick a job. The intro opens with "Every profession needs a stack of skills," and SkillCache says choosing yours gets you "the curated categories that teach what it takes: not generic career advice, real learning paths." At the time of writing, the page lists 106 professions in eight groups, from Build & Code to Live & Learn, and the SDR, AE and Sales Representative cards sit in Market & Sell.
Each card lists the skills behind the job as chips, plus a resource count and a free count. If cost is your main constraint, sort by most free to put the cheapest-to-start jobs first in each group.
The skills a sales development rep needs: read the SDR card
At the time of writing, the Sales Development Rep card shows four skill chips:
- Sales & Negotiation
- Communication & Interpersonal Skills
- Email & Automation Marketing
- Time Management & Productivity
Beside them sit 122 resources and a free count of 110, at the time of writing. Read that 122 as a sum, not a shelf: a card's resource count adds up the listings in its skill categories, so one resource can count under several jobs.
Two details change how you use the card. First, clicking a card opens the resource list for its first skill; to see the whole stack, open each skill chip in turn. On the SDR card, that first list is Sales & Negotiation. Second, the card carries no IN TRENDS tag. That tag means the Learning Trends page covers that profession's skills, nothing more, so its absence is no verdict on the SDR role.
Read this way, the SDR card is a fair sales skill stack for the job: conversations, sequences and the discipline of a prospecting day. If one of those four chips is weak today, fix it first; it's the job you're measured on now.
SDR to AE promotion: study the gap, not the whole stack
Now open the Account Executive card. At the time of writing it shows 122 resources, an IN TRENDS tag and four chips: Sales & Negotiation, Communication & Interpersonal Skills, Leadership & Management, and Business Strategy & Operations.
The first two are shared. In place of the SDR card's email and time-management chips, the AE card lists Leadership & Management and Business Strategy & Operations: the account executive skills you can start on while you're still an SDR.
| Skill chip | SDR card | AE card | What to do about it as an SDR who wants the AE seat |
|---|---|---|---|
| Sales & Negotiation | Yes | Yes | Keep building. Ask to sit in on late-stage calls so negotiation stops being theory. |
| Communication & Interpersonal Skills | Yes | Yes | Move from short openers to running a full discovery conversation. |
| Email & Automation Marketing | Yes | No | Your current craft. Keep it sharp, but put new study hours elsewhere. |
| Time Management & Productivity | Yes | No | Still needed: an AE juggles fewer, longer deals instead of many short touches. |
| Leadership & Management | No | Yes | Start now: run the internal handoff for a meeting you booked. |
| Business Strategy & Operations | No | Yes | Start now: learn to read a target account's business before the first call. |
The right-hand column is our reading, not the cards': an AE coordinates people on both sides of the deal and has to explain why a purchase makes sense for the buyer.
Two more cards worth opening
- Sales Representative shares Sales & Negotiation, Communication & Interpersonal Skills and Business Strategy & Operations with the AE card, and lists Digital Marketing where the AE card has Leadership & Management (at the time of writing, 122 resources, 103 free, IN TRENDS tag). It's a closer match than the SDR card if you sell a full cycle and source part of your own pipeline.
- Customer Success Manager lists Communication & Interpersonal Skills, Leadership & Management, Sales & Negotiation and Time Management & Productivity (at the time of writing, 122 resources, 104 free). Open it if you're weighing a move from closing new business to keeping and expanding accounts.
How to choose free sales training for one skill
Pick one chip from the gap, open it, and choose a single resource. Five rules keep that from turning into a bookmark collection:
- Match the skill and your level. A negotiation course written for procurement teams is not one written for a rep closing a mid-size deal. Read the description before you click through.
- Use the listing as a shortlist, then check the source. SkillCache says each entry is checked for a working link, a real price and whether it actually teaches, and its disclaimer names the provider's own page as the final word on price and free-tier status, so read that page before you plan around a free tier.
- Separate the course from the certificate. Open lessons tell you nothing about what proof of completion costs. If your manager wants a certificate, check its price on the provider's page.
- Expect the occasional gate. Not every listing opens straight away: some ask for an email first, and a share of the catalog is kept for members, so shortlist a second option in case the first is gated.
- Pick something you can use within a week. If you can't name the call or email where you'll apply it, choose another.
Practise it on this week's pipeline
Book one fixed learning block each week and guard it the way our time-blocking system for sales protects a daily prospecting hour. Spend the first half on the resource and the second half applying it: rewrite one call opener, prepare one account brief, or rework a sequence step. If your gap is still inside the SDR stack, our cold outreach guide covers the email side.
An illustrative four-week plan for the two AE-only chips:
| Weeks | Chip | Study | Apply on live work |
|---|---|---|---|
| 1–2 | Business Strategy & Operations | One free resource on how businesses set goals, budgets and metrics | A short account brief before every first call |
| 3–4 | Leadership & Management | One free resource on running meetings and working across teams | Lead the handoff call for each meeting you book |
If AI drafting is part of your outbound work, the skill gap is wider than the cards show. For its September 2026 Workforce Report, iCIMS surveyed U.S. job seekers: the group teaching themselves AI skills grew from 22% to 30% in a year, while employer-provided training held roughly flat at about one in six workers. At the time of writing, none of the sales cards lists AI Tools & Prompting in its stack, so add that skill yourself. SkillCache's guide to real prompting skills is free to read and sets out what it calls a four-part briefing: role, task, constraints, example. The same four parts make a usable brief for an AI-drafted first-touch email.
Honest limits of a profession map
- Not every sales title has a card. At the time of writing there is no Sales Manager, BDR, Sales Engineer or Business Development card, so if your job isn't one of the 106, pick the nearest card or search by the skill instead. A sales manager can start from the Account Executive card and its Leadership & Management chip.
- The cards are a map, not a ranking of jobs. A higher resource count reflects how many listings sit in a card's skill categories, not how good the job or the training is.
Why the gap keeps moving
The World Economic Forum's Future of Jobs Report 2025 expects two-fifths (39%) of workers' existing skill sets to be transformed or outdated between 2025 and 2030. The same report adds: "Analytical thinking remains the most sought-after core skill among employers, with seven out of 10 companies considering it as essential."
For a rep, that means reading an account's numbers and building the case for a purchase: one more reason to start on Business Strategy & Operations early and revisit your skill map every quarter.
FAQ
Is free sales training enough to move from SDR to AE?
It covers the knowledge side. A promotion rests on your results and your manager's criteria, so ask for those criteria in writing, map them against the two AE-only chips, and show the skills on real deals.
I'm a BDR, not an SDR. Which card should I use?
At the time of writing there's no BDR card, so start from the Sales Development Rep card: the day-to-day skills are close. If you also run full sales cycles, open the Sales Representative card too.
What's the risk of relying on a free resource list?
Two things. Free tiers can change, so check the provider's page again on the day you begin, not the day you saved the link. And free study still costs time: if a resource doesn't show up in your calls or emails within a couple of weeks, drop it.
Next step
Open the Sales Development Rep and Account Executive cards side by side, write the two chips that differ at the top of your development plan, and book your first weekly learning block. When you want to look past your own seat, compare the sales skills SkillCache maps to each profession and pick the next gap.
Disclosure: this guide was produced in collaboration with SkillCache.