Cannot decide on class

[b_rob242]

Hey there,
I'm returning to P99 after a years-long break. I'm restarting on Green, and I'm considering really pushing myself to group more.
I played a solo Necro mostly before.
I really don't know group mechanics much, so I don't know what to play. I keep thinking about either druid or cleric. I have a level 4 HIE CLR that I've just been soloing outside Felwithe. I am a bit apprehensive because I perceive others will assume I know what I'm doing in my class. Probably a silly assumption, but it's there, nonetheless.
I don't have a guild, but I hear <Castle> may fit my play style.
That's about it for now.
Newish player, new class and no guild as of yet.