It is okay, your posts are reallllllllly informative, and that is exactly what I was looking for. I will be a lot more comfortable looking for a bike armed with your knowledge.
Yay.

Wait, I need to go to lunch*... no, must... be... informative...
I'd say I am pretty strong on my lower body. Well, and upper. Where would be the best place to go to find a decent selection of motorcycles?
A motorcycle shop!
Looky looky.
And don't worry, I am definitely getting a full face bucket. Remember, I am really concerned about my safety. Plus, the statistics definitely say I should be wearing one. Is mesh any better than leather, or is it just cheaper? And fortunately for me, I believe I know people who can tell me a thing or two about bikes, and repair, who can teach me to fix certain things or just fix it themselves.
Mesh versus leather is a matter of weather and
heat as much as armour levels. Leather is a bit more protective, since the material itself also absorbs some of the friction before submitting to the destruction of road rash, whereas the primary protection with a mesh jacket is from the internal armour itself. Leather, however, is also
hot as hell during the summertime. It does not breathe, which mesh most assuredly does - an armoured mesh jacket is essentially what one wears during the summer to be safe whilst not dying from heat stroke. A lot of mesh jackets do have liners that make them wearable through the fall, though. I have two jackets - a mesh one and a leather, both of which are BADASS. (I'm so subtle.)
I am kind of surprised that the insurance is so low! I was expecting $100 or so. Why would a lower cc bike be less dangerous? Is that just some strange misconception?
The general logic from what I understand consists of this: lower cc bikes don't go as fast, are easier to control, and statistically are involved with less accidents since jackass 20-something males with 1000cc motorcycles who are into looking cool, going fast and trying tricks are... more common than should be allowed.
The Ninjas do seem really nice, and I should be able to find one at a reasonable price, so I think that will probably be my best option. Did it take you long to get used to riding a bike?
I love speed. I love heights, freefalling and the feel of air flowing through and around my bike and body. I am also a stickler for safety, but that's beside the point. To me the primary adjustment was just becoming comfortable in all the weird positions that motorcycles put you in - leaning over
into a turn when speeding along the highway but leaning
away from the corner to counterbalance when it's a slow turn, feeling the perfect transition between gears when my bike is like an impatient cheetah (small, strong and fast), etc.
The best thing to remember in my personal opinion when riding: never freak out. Keeping a calm, and riding at a level that both practices new maneuvers and does not raise your pulse rate past about 75% of its max is so important. Freaking out is what can instigate an accident or laying down of your bike - both because it involves the physical reactions of being stiff, twitching or jerky motions and because if you are freaking out it is quite likely you are riding above the skill level at which you should be.
Also, are 250cc bikes just as good performance-wise as others, or would one end up wanting to 'upgrade'?
Performance wise they can
outdo some others in regards to certain things: the aforementioned handling at high RPM's and cornering, for example. However, speed and power-wise you very well may want to upgrade at some point after you get down the fine motor skills of riding. Ye might realise that, hey, I want to be able to go 100 mph on a straightaway or participate in a track day. Personally I do wish to upgrade at some point, but am still in school and find my bike so lovely that I don't want to do it till I'm financially comfortable with the idea.
*Just kidding, I'm enjoying the conversation.
