Yes, from the center of home plate to the center of first base.
You can't steal first in any league. You can only steal once reaching base.
yes
From the back of the plate to the front of the base.
Yes. There is no MLB rule that prohibits sliding or diving head first into any base.
Catcher, pitcher, outfield, and first base are the only position a lefty will play at the major league level.
60 feet
No, it's legal to go back head first.
Yes. You cannot slide head first while advancing but you can dive head first BACK to a base.
Left field, right field, center field, first base, second base, third base, catcher, shortstop, pitcher
Yes
With the exception of Little League and streetball, the bases are always 90 feet apart.
From base to base, each path in Little League Baseball is 60 feet long, which is 30 feet less than that of Major League Baseball. There is a total of 360 feet of pathways around the baseball diamond in Little League Baseball.