I have heard a few people say they don't know how to post here and contribute. Okay, here's a step-by-step breakdown!
S1 Sign up for a Google+ account.
S2 Send me your Google+ ID by messaging me through the site or sending an e-mail to firstname.lastname@example.org.
S3 I will then e-mail you a link to become a contributor.
S4 Follow the steps outlined in the e-mail.
Bear in mind, I am only pretty sure this is how it works as when I started this site, obviously I did not need to join it since I owned it!
If you find out differently, PLEASE let me know at the e-mail addy above!