Hey ppl.. can you please tell me how can i bring the jomsocial registration module to the homepage right side and an image to the left side.

is there any templates related to what i'm expecting? thanks

You need to edit the components/com_community/templates/default files.
There are a bunch of frontpage files you will see there.
Start with frontpage.index.php

thanks. i will check them and get back to you if i need any support!