Hello Codeforces!

(I don't want my friends to see me that's why I created this account).

Till now I am able to solve basic cp problems on binary search, two pointer,constructive algorithms, implementation and sometimes greedy problems on codeforces. By basic I mean upto tag 1300. However when it comes to tags like DP, tree, graph (which requires knowledge of recursion) I falter. I thought that the EDU section on codeforces will come up with recursion topic but I guess it has started with DSU after string suffix and binary search. The EDU section has helped me a lot in solving problems.

I also read few chapters of CSES Competitive Programming handbook by Antti Laaksonen. (suggested by pllk) It is a great book but it does not cover recursion in detail. (Chapter 5 deals with recursion little bit)

Please suggest some resources so that I can learn this topic. And hopefully can overcome my fear. :)

Thanks in advance! :)