Also if yamaha is still making the YZF 600 (not R6) that is also a good bike that is somewhat forgiving, comfortable, and powerful enough to keep new riders interested. Now if you do go with a 600 the biggest thing is don't ride the bike just back and forth to work or grocery store and think you are learning to ride. First go to a parking lot and learn braking (SMOOTH), do some swerving, and foremost when riding in corner mentally tell yourself when you want to lean to push the bar to lean (Countersteering). If you want to lean right push on the right bar and vice versus. Even though you may do it somewhat subconciously you need to be aware of it and it has to be habit as it can save your life in many situations. Had a buddy who bought a Ninja 500 rode it back and forth to work nothing eslse. We took him on a ride with us out in the twisties. My dad 2 up on the BMW 1100 RT behind him, and as soon as the riders in front were out of sight he slowed down some but then still crashed on a corner that was easily taken at 10-20 mph faster then he crashed at. Everything you can think of wrong to do in a corner he did it, target fixation, panic, panic brakes. If all he would have done was turn his head into the corner he could have easily made it at that speed.