Hey there friend!
My name is Jeff, and I represent a small Horde guild on Icecrown. What you are describing that you are looking for suits us very well. We are a very tight knit family of gamers who are always looking for a few more good friends to come along on our adventures.
I think that we would really suit your style, and what you are looking for. We have a lot of newer players, and have been getting them all ready to take on the end game content. We would be a great place for you to not only learn to raid, but learn to heal as well. I have a need for a few people who would love to heal full time, and would love to give you that opportunity.
HERE is my recruiting thread post. Please give it a read, and if it seems like a good fit for you, I would love nothing more than to have a conversation with you about it! My Discord info in there, and I would be glad to carve out some time to chat!
I really hope to hear from you!