http://www.perkwerx.com/DDS/DDS.htm)
This site (which created many of the bot routes I use on Meatgrinder) features bot tutorials and a link to download BotMaker, a free easy to use utility for creating JK2 (or JA) bots.
Bots are just text files (with the extension jkb, and bot, and a bots.txt file), but the program makes it easy, especially for beginners. ;)