Welcome to the wonderful world of Vinyl. Cart setup is all about spending time and learning the intricacies yourself. It will easily take you a few weeks of experimentation to get it right. So take your time, download the alignment charts, read up as much as you can and make sure your protect the stylus at all times. Get yourself some good forceps or fine pliers to fix the leads in and a good magnifying glass (nowadays they come with a light too). I use a laser sight to align the tonearm as well (probably not required on all tonearms). Once you get it right, leave and don't mess with it. I destroyed my leads completely trying to mess with a few cartridges. The brush is to make sure the dust doesn't clog the stylus and probably wont improve audio quality (hasn't in my case). Have fun brother. Cheers..Amar