I think you should start with some fundamental knowledge and skip the dictionary for now. A "pistol" is generally considered to be a semi-automatic or auto-loading hand gun. A revolver is not a pistol. Don't believe me, check out the IDPA rule book : IDPA 2014 Rule Book
So, taking your post at face value, you will be limited to a couple of .357 chambered pistols that will all be heavier than your average 22 rifle!
Now that I'm done picking on you.......
Take the advice of the others above and reconsider the options. Day to day carry is a PITA and the only time I carry a mid-size revolver for all day, average day, use is in the dead of winter when I have the clothing to match.
Oh sure, there are .357 snubbies out there, but I do not consider them "starter" guns. I've been around the block and I'm no wimp. But the thought of lighting off a full power .357 in an 18 or so ounce package makes me shutter.
The best bet would be for you to find someone with a fair assortment of different types of handguns and try them out. If you don't know anyone like that, join your local club and find one. We're out there, and very willing to help.
Start small and practice till the cows come home. If you do get a .357, practice with 38 spl target loads and work your way up.
Beleive me, I was in your shoes back in college. I just had to have a 44 mag and then I got a .25 acp to boot. Turns out I couldn't have been any stupider as I picked two of the worst starter handguns out there! Of course the fact that I couldn't afford my next beer, let alone 44 magnum ammo to practice with, never entered my young mind. I went years thinking I couldn't hit the broad side of a barn with a handgun.
Then, in my mid 20s, I got a S&W model 17 - 22 caliber - and lo and behold - turns out I can shoot ok!