Hi Muddbeard, and welcome to Phoenix Albion!
From what I've seen, there are two main load-outs for friars: Rejuv or Fighting or a hybrid of both (master of neither).
In either configuration, you will want to spec pretty deeply into Enhance since that is where your Personal Buffs and Group Resists are.
If you go Rejuv, you still won't have the healing output of a cleric with their Single-Target and Group Insta-Heals and Spread-Heals, but you will have the Friar-exclusive Heal-Over-Time which is very good in non-burst situations (i.e. better in PvE than PvP).
If you go fighting, just amp up your staff for maximum damage and you are set for hunting 'sins or peeling if you are in a group. My friar is a hybrid with Rejuv being about 1/3 higher than Staff, but she still has tons of healing and buffing utility, as well as doing a passable job of killing sneaks in DF.
Whichever you choose, don't get discouraged if you get passed over for a cleric: they just have better healing tools than a friar. Also, when advertising for a group, let them know what you are specced for and what you would like to do. Most times when I was invited to a PUG it was to heal, so in those cases, the staff only got swung if things went truly pear-shaped. If you are playing backup for a cleric, you can let them know you want to mix it up a bit. In that case, throw out your HoT and jump into the fracas!
It's hard to screw up a friar too badly, so spec your friar to your own play-style. If you find yourself wishing you could heal better and rarely swing the wood, you might roll a cleric and get a feel for how they play. Personally, even though I prefer the healing game, I play my friar a lot more these days simply because she has better self-defense capabilities and isn't an easy RP donor if I run into a baddie.