oh, you want to do the opposite of what you'd think with equipment. a powerful 110+square inch frame is going to put more balls over the net off the rack and it's going to be more encouraging. but you're learning how to push the ball not hit it because it's too forgiving, the string pattern's too tight to ever hit real spin with and eventually you're going to have weird cut-off strokes. gateway drug. may as well slam it, you don't see oversize widebodies on the tour, do you?

most of them are head-heavy, which means the weight is at the top of the thing which means you'll never hit a serve right because flat, slice, or kick-every serve relies on you being able to snap or roll your wrist over the ball quickly as part of the motion.

so head-light is what you want, not initially going to do work for you at the baseline, but if you watch nadal(mortals really shouldn't emulate most of his game, but he's going to be visible for an example) hit a forehand, the amount of action you see as his wrist breaks over the ball basically requires that the weight's all centered towards his hand not the tip of the stick)

no pro since maybe that stiff todd martin in the 90's has used anything head-heavy for a reason and most of them lead the fuck out of already headlight ones to make them easier to flick and brush at the ball with. the thing sampras and federer's evolved into is strongly headlight, the heads agassi and djok as well as the babolats nadal and roddick use are bigger in headsize but both very head light. and the prince original graphites are also weighted the same.

just rent a ball machine, get a few private lessons and a mid-midplus "player's" frame and fucking swing away, you'll hit enough to realize "i should repeat that shit" you'll end up with a real serve, groundstrokes with enough spin to be heavy hitting back on the other side of the court, and shit like developing the ability to realize if someone guns one say, to your backhand but close enough you'd want to get a step away from it to use topspin returning it, you can be lazy if you develop some cheese, which would be not running but just hitting it one handed with backspin/slice and slowing things down. instead of giving them more power to work with like you would have, they've gotta deal with underspin first, then figuring out how if they can make an offensive shot out of the thing. graf, sampras, edberg, federer are all perfect examples of how to mess with the heads of someone who might be a better pure baseliner than you, especially to the backhand.

so get something with an open string pattern like 18x20 and headlight. probably closer to 100 inches than 90, strings are subjective but not totally, happy to elaborate