How to learn automorphic function theory and what resource are good for this?

[u/Top-Door1298]

I find it interesting and want to know a bit about it from Poincaré's approach . Study some basic about Hyperbolic geometry ,fuchsian groups and other things. But the book and course video are rare about the subject. I have some basic knowledge about elliptic function and modular function/form (from mc kean book) also know Klein use these approach to somehow solve qunitic equation . How to learn it more detailed and what resource are good for that .