I read Agenttikki's primer and the other stickies several times, figured out what kind of AR I wanted that would suit my needs, sought advice from this and other forums, searched reviews and YouTube videos.
Started ordering parts...ended up with a BCM and couldn't have been happier. I bought a complete a complete upper and BCM doesn't sell stripped lowers so all I did was figure out which parts i wanted to add like the BCG, grip, stick rails etc.
Just finished my second build which started with a stripped lower and un-barreled upper. With a few tools- punches, roll pin pinches, vice blocks, AR15 wrench, torque wrench and the guidance of many of the members here who have allot of experience and are willing to share, it's really very easy to build one.