Hello, when searching for information on the c++ part everything is very caothic. After seeing some of the great tutorials of richmar1 I had an idea to make things easier.
There should be a scheme of how things work in CryGame.
I'll show some images so it's more clear.

Would you like something like this?
Also,if someone is interested in helping send me a pm.

PD:Sorry for my english

Good Tutorial
Do you know how to make gun in cryengine 3 i know how to model it but after modeling i don't know what to do ? anyway thanks for the tutorial

Sounds good, there isn't really a graphical representation of Cryengine structure in the official documentation, so something like this should clear things up a bit.