hi & Welcome to the site. Of course you can join us You can earn points by going into "My Center" an clicking into "Tasks" every day (& a few times a day), by commenting on the work of others and don't forget to rate them, it doesnt' cost you anything.
Welcome - slow and steady wins the race :-) Post, post, post to get points and do your daily tasks plus the ones that get you bigger rewards like adding an avatar.