I'm typing this on my new Mac laptop which arrived today, and since I'm a computer moron and have only ever used Windows since 1993 I don't actually know what the hell I'm doing.
Welcome to the world of Macs.
I switched to one in 2007, after years of Windows and, before that, MS-DOS. The hardest thing for me was getting used to some things being mirror image (left/right), like the close/minimize/maximize buttons.
You'll catch on quickly.