The coding platforms that learn-to-code communities on Reddit recommend most often are freeCodeCamp, The Odin Project and Harvard’s CS50 for beginners, and LeetCode, NeetCode and Codewars for practice. This page groups ten of them by what they do well, so you can pick based on your goal. It is not a vote count: Reddit threads change daily and opinions differ, so treat this as a map of the platforms that regularly come up, and check each site for its current content and price (as of October 2026).
How to read Reddit advice
Reddit is useful for hearing from people who have finished a course or gone through an interview loop, and weak for comparing platforms fairly. A few cautions:
- People recommend what worked for their goal. A web developer’s favorite is not the best pick for someone preparing for algorithm interviews.
- Posts from years ago may describe a platform that has since changed its prices or content.
- Affiliate links and self-promotion do appear in recommendation threads. Look for comments that explain what the person actually built or learned.
For learning to code from scratch
1. freeCodeCamp
A non-profit with a free, project-based curriculum centered on web development (HTML, CSS, JavaScript, and later back-end and data topics), with free certifications and a large community. It also has a JavaScript algorithms and data structures section. Best for: beginners who want a free structured path into web development. Limit: it teaches you to complete exercises; you still need to build your own projects to learn how to design something from nothing.
2. The Odin Project
A free, open-source web development curriculum funded by donations. It sends you out to read documentation and build projects early, rather than watching videos. It covers HTML, CSS, JavaScript, Node and databases, with tracks that include Ruby on Rails or JavaScript full-stack. Best for: people who want to become web developers and are willing to learn by reading and building. Limit: it asks for self-discipline, since there is no teacher checking your work.
3. CS50 (Harvard)
Harvard’s introduction to computer science, free to take online. It starts with C and moves through Python, SQL and web programming, and its problem sets have a reputation for being hard. A certificate may cost money on some routes, while the material itself is free. Best for: learners who want real computer science foundations, not only syntax. Limit: the first weeks in C can be a rough start for people who just want to build websites.
4. Codecademy
Interactive lessons in the browser across many languages and subjects, with a free basic plan and paid Plus and Pro plans (as of October 2026, prices on its pricing page are shown per month with a discount for annual billing, and they vary by region). Best for: a gentle first look at a language with instant feedback. Limit: guided exercises make it easy to feel you understand more than you do; build something on your own afterward.
For practicing problems and interview prep
5. LeetCode
The most common recommendation for software interview practice: thousands of problems by topic and difficulty, contests, and a big discussion section. There is a free tier and a paid Premium plan. Best for: the algorithms round at tech companies. Limit: it assumes you already know the concepts, and it can be discouraging if you jump in cold. The post on why LeetCode makes people quit covers how to avoid that.
6. NeetCode
A curated roadmap of problems with video explanations, built around well-known lists such as the NeetCode 150. The core roadmap and videos are free, and there is a paid Pro tier. Best for: people who find the full LeetCode problem set overwhelming and want an order to follow. Limit: it is a layer on top of LeetCode-style problems, so you still practice mostly there.
7. HackerRank
Free practice across algorithms, SQL, regex and language tracks, an Interview Preparation Kit and free skill certifications. Many employers also use it for online assessments, so it is worth knowing the format. Best for: getting used to what employer tests look like. Limit: less depth in interview-style problem discussion than LeetCode. See the full comparison in HackerRank vs LeetCode.
8. Codewars
Short challenges called kata, ranked from 8 kyu (easiest) upward, in many languages. After you solve one you can see other people’s solutions, which often show idiomatic tricks in your language. Best for: building fluency in a language you already know. Limit: kata often reward clever one-liners, which is not what interviewers look for.
9. Exercism
Free exercises in dozens of languages, with automated feedback and volunteer mentoring on many tracks. Best for: learning a second or third language properly, with feedback on style. Limit: it is not tuned for interview-style algorithm problems.
10. AlgoCademy
Our own platform, so weigh this entry accordingly. It teaches programming and algorithms through interactive lessons with step-by-step guidance and AI help, from basics to topics like recursion and hash maps, with interview-style problems at the end. Best for: people who know basic syntax and get stuck when they jump straight into LeetCode. Limit: it is a smaller community than LeetCode, so there are fewer user-posted solutions to compare against. Check algocademy.com for current plans.
University courses worth knowing
Coursera and edX host courses from universities. You can usually audit many of them for free and pay only if you want a certificate or graded work, though what is free varies by course and can change. They suit people who want theory and a fixed schedule. They are slower than hands-on platforms for building practical skill, so many learners pair them with a practice site.
How to choose
| Your goal | Start with | Add later |
|---|---|---|
| Become a web developer, no budget | freeCodeCamp or The Odin Project | Your own projects, a portfolio |
| Understand computer science | CS50 | An algorithms course, LeetCode |
| Learn a language with feedback | Codecademy or Exercism | Small projects |
| Prepare for algorithm interviews | NeetCode roadmap or guided lessons | LeetCode, mock interviews |
| Prepare for an employer’s online test | HackerRank sample tests | LeetCode patterns |
A simple plan that fits most people
- Pick one beginner resource and finish it. Switching platforms every two weeks is the most common way to stall.
- Build two or three projects that are not tutorials, even small ones.
- Only then add interview practice, if that is your goal: about 30 minutes to an hour per day on one topic at a time.
- Practice explaining your reasoning out loud; see Reddit’s guide to technical interview prep for the interview-specific advice that often gets repeated.
The best platform is the one you will keep using. Most of the ones above are free or have a free tier, so try two for a week each and keep the one you come back to.
