A couple of methods, though not all of them. (MT is very flexible and I'm still learning what it can do too!)
1. An about page can be just a standard HTML page that you link to from your index, or (if you plan on updating it through MT) you can use the new BLOG method. It really depends on the results you want, and what you plan on doing with it. If you plan on allowing comments to be posted 'about you' or updating it regularly, I would use a new BLOG.
2. All of the templates are easily modifiable and are pretty much just plain HTML. I don't see a reason that you couldn't use a counter just like on any standard web page. Just cut and paste the code you want right into the template. Anyone else have ideas?
3. uh. . . well. . . . good question. It looks to me like you just have to move it back up inside the div tag. The MT templates use CSS, and I know little (ok, I know NOTHING) about how they work. Somebody that has a clue would be better off answering this one for you.
4. That unused space on the right is only there because your screen resolution is high enough to have it. Somebody else might not have the same resolution you do, so understand that the picture may end up on the bottom. (To understand this, open your page in a window and then make it smaller then the content width. You'll see that the calendar and links move to the bottom of the BLOG.) To actually add the picture, just upload it to your server and link to it where you want it to display by modifying the template. If you know any HTML, this is easy. If not, an example from the banner image on
my site:
CODE
<img src="Banner.jpg" width="348" height="100">
5. uh. . . don't know. Sorry.
The big picture here is that MT is very easy to customise simply by editing or creating new templates. In fact, other than the "powered by Moveabletype" link on my main page you would probably never know that I was using it it's been beaten into submission so much. The best advice I've seen on this forum has been to play around with it and see what you can do. (after backing up of course.) :)
Good luck!