Which Mac Device is best for Photography?

I'm going to become a beginner in photography, so i would like to know what would be the best apple product or any other device that would be perfect to photo shop and pictures? Please help me because i do want to become more advance in photography, because i just got into a photography magnet and i don't feel quite happy about how much i know and how much i have? Right now i have a Nikon D3200 DSLR, Black. If you could please help me and maybe give me some advice? Please and thank you very much!

Any decent computer (not just macs) will run photoshop; it's not a super-special program. On that note, any $500-$600 PC will run it, and virtually any mac will run it (macs are seriously overpriced for what you get - there's about a $700 difference between a standard PC and a hardware-identical mac pro; which is why I recommended the former. It should be a felony to charge $200 for 4 gigs of ram like apple does).