Welcome to the Make community!
Yes. Check out the custom apps tutorial in the Make Partner portal. There is an assessment with a sample API for you to practice making an app for.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!