Where to start?

Well, this is the start of our chopping and bobbing motorcycle experience. I chose a Honda CL100 because I saw one previously done for the DirtBag Challenge. Then one conveniently came up for sale on craigslist for $300. I promptly forked over said three hundred and did nothing for 6 months. So now we ( my son and I) are starting the chop in earnest(sort of...).