I an very new to the wikia community at this point and I need some asistence so I can be a pro

generally I need help with comiting on peoples posts. ex frank wrote: omg tom wrote: I know. how do I do that? also im not quite sure how to add pictures to wikia (never tried wired if ill mess up and destroy the wiki). im also not good at the whole {{Construction and [[line and stuff like that so if you can help me out that will be nice thx.