Hi everyone. I'm new here and also new to rpgs in general. I'm interested in playing D&D 5e.

Welcome!  There are a few 5th edition games running around, and you should be able to find them either in the Wanted Players forum, or by using the Browse feature at the bottom of the main screen.
Or, you can always make a post in Wanted GMs to request a 5th edition game, and any potential DMs or ones with a game already running might be able to find you.

You also have the option of trying the dozens of other games here on rpol, including freeform games with no need for a game system at all.

And please feel free to ask whatever questions you'd like.  We always love helping new folks.  :)