Help with relocating to Berlin on short notice?

Hey expats,

thanks for reading this.
I have to move in less than 4 weeks to Berlin, and getting a bit the panic not being able to figure everything out.
Could need some help to get me sorted. Unfortunately I have only a very small budget, so "relocation agencies" are not the way to go.
Does anyone know a service or people who can help with classic moving tasks like finding housing, neighbourhood recommendations some basic visa questions and all the other little stuff that usually comes up.

Thanks a lot for your help!