At the professional level, the pitcher is usually the weakest hitter. At lower levels the pitcher is often the best hitter, because he's often the best all-around athlete. However at higher levels, the only players who can stay in the game despite being weak hitters are the ones who play the most important defensive positions. First, by far, is pitcher. After that the shortstop and the catcher can often reach the higher levels despite not hitting as well as players at other positions.
The money they get paid with, usually comes from the club they play with.
position that allows for professional growth and advancement
You usually have your strongest hitters 4th and second strongest 5th. The worst ones are usually at the bottom of the line up. Usually your slap hitters are before the 4th batter. Homerun hitters are 4th and 5th.
The "keystone" in baseball usually refers to second base. It's called such because it is important in scoring (since a runner on second is in "scoring position") and because it's a key defensive position.
The baseball bat I use weights 29 ounces, while professional bats are usually around 32 to 25 ounces, 35 being more commonly used by power hitters. Babe Ruth used a 52 ounce bat-- yes, that is unbearably heavy by today's standards.
Usually attacking midfield, the "number 10" is usually the most dynamic player on his respective team
Some hitters struggle with the fastball, some the slider, some the change up. However, it is usually a good curve ball that hitters say is the most difficult to hit.
Depends on whether this is a position regulated by a state professional licensing agency, and the regulations in your state. Those that have such regulations usually require a minimum age, usually 21.
This usually happens the day before and the day after Major League Baseball's All-Star Game.
Platooning is when a team uses two different players at the same position and usually alternate series or games depending on production.
IF YOU TAKE A LOOK AROUND THE MAJORS, THERE ARE POWER HITTERS AT ALL POSITIONS, AND YOUNG POWER HITTING PITCHERS IN HIGH SCHOOL OR COLLEGE ARE USUALLY COAXED INTO LEARNING A FIELDING POSITION, THERE USUALLY IS NO BEST SUITED POSITION. Although nowadays there are players with power at all positions, typically your power hitters are found at first base and in the outfield (and to a lesser extent, third base). The reasoning, I guess, is that these are the least difficult defensive positions to play, so your top hitters tend to get put there in order to allow them to concentrate more fully on their hitting.
Pro Tem means, like, temporary professional, usually used as a legal term for Judges who are brought in as acting judges while the position is vacant.