YAY! I have always been a PC girl (probably always will be to some extent), but hubby and I decided a few weeks ago to bite the bullet and begin a transition to macs. Our mac mini arrived yesterday and we're in love

We've got a lot of household type things that we're transitioning first, and hoping to get a tower and/or a macbook early next year.
Any must-haves, tips, tricks, advice from others?