Newbie here - How can i join bounty campaigns? what to do? Thanks!!!

better visit this link
https://bitcointalk.org/index.php?board=39.0Bitcoin Forum > Other > Beginners & Help
That section will help you a lot instead of posting here in altcoin discussion.
BTW, better read a lot before posting on this forum and make sure it is on-topic and never spam!
*** there is only few signature campaign for newbies.
though you can join bounty campaigns of social media if you want.