Well first off, a 55 monk is not what you want if your new to monking, that is not really a team sort of build, a 55 monk is a solo build for farming and running (and reletivly uncommon for a 55 monk runner.) If your starting off I would just go with a standard healer, in order to fully answer your question I need more details.
If your trying to start off along the lines of PvP monk, I'd go with a Word of Healing monk, thats probably the easiest to play.
As for PvE, just simply go through the game monking for missions and such, doing streight up healing, with maybe some condition removal, AND NEVER LEAVE WITHOUT A REZ! At that point, you should be familiar with things to the point at which you'll see these guides and be able to understand what their purposes are.