you need to read all the stickies in the mechanical threads. a lot of your questions will be answered by just spending time reading them.
my #1 suggestion is to go radials as-soon-as you can. Radials transform your bike's handling in a way that no-other single switch can. A kosman 17" or 18" wheel will run you about $400-550, and heck, a new one from kosman, once you do the shipping, isn't much more! Two good quality tires (you use the stock front wheel, not-optimal, but it will work) and slap some hh pads into your stock calipers, and you're good to go and stop. The handling will be much-more inspiring, and your fear of using your bike to cut some corners or in the upper speed ranges will dramatically lessen or disappear. No it is not a 2014 sportbike, but radials can make your ride much better than it was from the factory. You should be able to do it for ~$1k even if you bought a newly-modded kosman wheel from ca, and you can do it for about 3/4 of that w/a bit of prudent shopping.
now, start to read, and take notes on what's interesting.
do your reading, make a list of what is interesting to you from what you read, and use the "advanced search" to get more info on your list of what you want to do w/your bike.