does this game have a support class

[karen of mental illness]

or anything that i can do to support teammates im new

[Sticky Wicket]

Yes. Minstrel, Rune-keeper and burgler traditionally. Other classes can also be fitted out to be more support-type roles.

[oreyos]

You can use Lore Master as support class as well

[MoNoXiDe]

captains seem pretty supporty also with buffs and heals n all.

[kmfdm]

Lotro is full of support classes - Captain (buffs, heals, off-tanking), Burglar (debuffing, CC), Loremaster (power restoration, CC, debuffing), in addition to obvious healing classes (if you consider that as support) - Minstrel, Beorning, Runekeeper
The rest of the classes are non-support: champion (pure DPS), Guardian (Tank), Warden (DPS or Tank), Hunter (pure DPS),

[MMOGamer71]

See here for class breakdowns:
http://lotro-wiki.com/index.php/Class