hi all im new to all this so be nice,

Please tell me, How to use clothes to the genesis of figure poser Ryan (Diego, Marcus, Ryan,etc)... because I can only use FaceGen just to the genesis

I am not sure what you mean. I only use DAZ (I tried Poser but didn't like it and wiped it from my HD).  DAZ should be able to load in any content from Poser.  Whether it is compatible with a Genesis figure will probably be a case-by-case basis, but most things can work with it. DAZ should come with the autofit tool already included.