compressor/limitor and normalization??

[lovemusic]

I'm working on making beats at the moment, and i was wondering if anybody in here would like to offer some advice on what is compression/limiting normalization, and how to use it. If somebody knows about this, pleasy try to reply if u can and if you're not busy. I also have a question on how to make my beat sound really loud without the song exceeding the peaks so no distortion occurs. Thanks. Appreciate it.