Meepo is one of the hardest, maybe even THE hardest hero to learn.

Meepo requires a ton of micro management skills, so you would probably have to learn these in practice games in the first place before attempting to play.

Remember, if one meepo dies, all die.
Make sure to farm a lot, especially in jungle, split your meepos and send them to farm with Shift+ A + left click on multiple points. You can get about 900 gpm if you do everything correct.