Licking the Cookies and then Putting Them Back in the Jar
Greetings! Don't worry about germs, I've got a toddler in the house and she might as well be a plague rat (hmm, I sense a new nickname...).
So have you actually tried any games already? Do you have an idea of what kind of games you'd like to try? Freeform vs various rules systems, any genre you want, etc.
Also, keep in mind that actual tabletop play is a different experience from play-by-post. They're both awesome, of course, but in different ways, so playing D&D here (or on any other forum) is going to be different from playing D&D with your friends sitting around a table.