Yeah, read up on it. For the longest time when I first "started out", I made mixes that were clipping to hell. I didn't really know any better, and I was just happy to make demos/music to show my bands. Over time, you learn....slowly, in some cases, how to get cleaner, louder mixes/masters.
What I do for volume in my home "Mastering" is use slight compression, maybe GClip to hack off some of the snare peaks, and maybe even another compressor with very light settings. Then I normally throw a limiter on and lower the threshold until I start to hear audible clipping then back off a bit. Ceiling of like -0.2. Not sure if this is a very improper method, but it seems to work for me.