What a great time for type lovers! Type for the web has made amazing leaps forward in the last few years - lifting previous limits and opening up endless possibilities. No longer are we restricted to only system fonts, instead we are free to choose from a vast collection of beautiful typefaces to shape and enhance our sites' message.
There are a plethora of resources, references, articles and websites out there for the enthusiastic typophile. I would encourage you to read up on the various elements of typography and get more familiar with the terminology used as well as the details of type setting.