I used some of the old threads from TNT to make sure I knew exactly what I was doing and they were incredibly helpful. However, just a few questions. Firstly, when shooting air into vial, should needle point be touching liquid? Also, I couldnt pull liquid and didnt think air even went in, but then realized that needle wasnt all the way tightened (so, just a pointer to other newbies-- make sure you tighten the needle). When aspirating, how far should you pull plunger back? I did it and little air bubbles were entering and I wasnt sure if that was normal, is it? Also, I didn't notice any blood coming into syringe when aspirating, but after I finished injecting, there was a bit of blood in the syringe-- that worried me, but the shot didnt hurt at all and I think it would have had I hit a vein; so, what is up with that? Anyway, that is about all. I am sure I will get better at doing the quad injections with practice. Thanks in advance for the help.