Japanese Maples: Got a japanese maple on sale. not sure how to properly care for it, 2 by HButtons

HButtons wrote:
Cliche title I\'m sure, but I\'m new to gardening in general and just bought my first home a few months ago so I\'m pretty clueless.
Three weeks ago there was a sale at a local garden store and I picked up this japanese maple tree. Stupidly I threw out the little care card that came with it so I do not know what kind it is or how to properly care for it.
I planted it about 3 weeks ago and it seems to be doing fine but it has some weird colors on the leaves and some are a little burnt or something. I was hoping someone could take a look and maybe tell me what type of tree it is and offer a little guidance on care and if I should be doing any kind of pruning or what have you. Thank you.