It really doesn't matter. Pick any pistol of quality construction, Hi-points and Jennings etc don't count here, and practice. Pick one that fits your hand and feels good. Don't get wrapped up about safeties and where they are located. Then practice. Rounds down range mean more than mechanical workings.

Second, get good instruction. The way to accelerate learning how to shoot correctly and expending less ammo is getting good instruction. The better the instructor, the less ammo to get good.