The differences between a Mac and a PC

I am still trying to wrap my head around how to use this shiny new thing called a Mac. The differences are many and confusing, yet similiar enough to confuse me further. Basicly, I am easily confused.

One of the differences appears to be that I can't do all of the neato editing tricks and fruity colors on my blog that I am so darn fond of and when I blog with the Mac it looks like this entry. Boring. Anyone got any tips for me?