Read and do every single page of Coding Interview book, there are a tonne of problems with Leetcode style interviews but if you wanna get a better job and earn more money know how to do Leetcodes is a huge part.
(Aside, I did wonder if a cool interview thing to try out would be a sort of Architecture/Coding Kata using a GPT, where the user could ask the questions of the machine and build something closer to a real system)
