Me again!! One other reason why Macs are wonderful....Apple makes ALL the components within all their Macs.....whereas when you get a PC, you get components that are made from different manufacturer's, which is why there are sometimes issues with them freezing up.
Yep Mac's do cost more up front, but come loaded with way more programs already installed....the most comparable PC I looked at when comparing the two was about $200 hundred cheaper with all the bells and whisle upgrades..larger memory, running speed, etc that would equal a Mac....but was loaded with nada....by the time I would buy iPhoto, iMovie, GarageBand (not that you need these for nursing, but they are just fun!) and there are many others, I would have to spend the equilivent for a Mac . Regardless, you will need to additionally purchase Powerpoint and Word.
And I had no issues taking an online/RODP course using my mac either.
Anyway, the choice of what you are most comfortable working with is what's important. i debated over and over for days and then decided on the Mac.