I have to start from somewhere. I don’t mind the grind. I am fascinated by networking. Will begin with beej guide, and go from there.
http://freedman.net/bgp102.ppt
http://avi.freedman.net/fromnetaxs/multi.html
BGP is just the way networks exchange routes (paths to a specific IP address) between each other. Once you know a little bit about how routing works it will make sense.