Resto Shaman

So I just hit 90 with my first character, a restoshaman. I can't find any way to get my gear up without doing the raid finder, which if I understand correctly can only happen once a week. I have ilvl 463 from the dungeons, but what can I do to make my heals stronger? I feel so underpowered when healing in raids/dungeons and don't know a way to get better gear. Please help fellow wow redditors!?!