First up, welcome to the forum!

WILD means 'Wake Induced Lucid Dream', it's a particularly hard induction technique, but staff member Clairity has written a blinding tutorial for how to do them so check it out here. http://www.dreamviews.com/community/...233#post476233

An RC is a reality check, a test performed to see if you're dreaming, for more information check this handy thread out http://www.dreamviews.com/community/...ead.php?t=4470

Never come across that before, but what it is is a 'Dream Sign', an indicator that you're dreaming. Seems to be a common one for you. People look out for dream signs and reality check when they come across them, increases chances of lucidity to no end. Lucky you having such an obvious one.