Go here for guidance: https://docs.racket-lang.org/getting-started/index.html

Check 'Getting started' above, but I'd suggest that if you are already a developer, start with the Racket Guide, and 'How to Program Racket: a Style Guide' both available in the documentation site https://docs.racket-lang.org (and bundled with the installer). The Racket Guide is fully integrated with the Reference - click on something and it will take you to the reference for the full definition.

It's also worth working through HTDP https://htdp.org - with the caveat that you are using the teaching languages. A really nice thing is Racket can support students/learners, without compromising the full language. The Racket installer includes Racket, proper, the teaching languages, and a number of other languages.

When I was learning in university, How to Design Programs was the textbook: https://htdp.org/2020-8-1/Book/index.html

There are 2 edx courses based on the book too for those who prefer video instruction.

[1] https://www.edx.org/course/how-to-code-simple-data

[2] https://www.edx.org/course/how-to-code-complex-data