I just need guidance

Hello, i dont have much people at my around who know opengl.

And i cant ask my simple questions to them. So im here.

Lastly i wrote box system for collision. like here:

It detect contact between boxes, and does not let objects to enter the nest.

Now what should i do?
I dont know glsl, and i couldnt load animated model yet.

Should i look glsl, or try load animated model?
Note: i dont want md2 md5 model formats. I want a good model with bone system… I saw assimp, cal3d at google. Can i use them? If you loaded, what did you use?

Im sorry about my low english.