The Build your own HTTP Server challenge is currently completely free. Otherwise, you can do the first 2 stages of any challenge without paying. You can also c

The Build your own HTTP Server challenge is currently completely free. Otherwise, you can do the first 2 stages of any challenge without paying. You can also check out all the prompts and overview for all challenges without a paywall, and you can attempt beyond stage 2 if you have the membership. You might also find tutorials here useful https://github.com/codecrafters-io/build-your-own-x https://github.com/codecrafters-io/build-your-own-x