How do you rule out your lesser rated theologies, lexicons, commentaries, etc. when you are studying your passage so you only get hits from the resources you use all the time? Mark Barnes is glad you asked. I just want to point you to his Advanced Collections video.
http://www.4-14.org.uk/logos/tutorial-videos#vimeo-8145864
Don't worry if you don't understand as he rapidly types in strings for advanced collections. Get to the part where he demonstrates how to make a "Not Highly Rated" collection and why. Brilliant. It allows you to quickly rule out resources you DON'T want when you build any collection (Do you REALLY want all 50 systematic theologies you have in your library searched when you're studying "forgiveness?" I didn't think so. You primarily want your most useful ones).
Thanks Mark!