I dive and snorkel; my advice would be to try on any mask you like the look of and make sure it fits properly. This is something you don't want to get wrong.
It's also a good idea to get a rash vest (if you've not done so already) I got quite badly burnt once and never now get in the water without it.
Time can fly by when you're in/on the water!
Edit - The same applies to fins, don't buy them on the internet until you've tried them on for size first.