I'm fairly new to boxing as well (at 71 now with my 4 ele + prot paladin). Might share my experience:

- most macro's on this forum require a lvl 80 with all toys. I've tried adapting those macro's to my respective toon level, but I noticed it was too much trouble (was spending more time macroing things than i was playing). Why? Cause in world pve it's like 1 hit kill. Even now in northrend, I pull 10-20 mobs with my tank, drop 4 magna totems + consecration and they don't even scratch my toons.
- I've used (use) your setup: bind the spells that match to the same position in the actionbar. In world pve I only use 4-5 keys anyway in combat. I also gave stuff like drink, eat, mana potion etc the same hotkey, as well as accept / follow macro's.
- I started fairly late with instances (when I was 60), and there macro'd spells come in handy. For sure on my tank to build aggro. And this gave my playing experience a big boost. I to a look to other macro's (even classes I don't know), just to learn how it works, what might be useful for me and to learn the macro language in general. I have a pretty good idea now how my macro's will look once i hit 80.
- I can only second what Ualaa said about the shaman/prot pally team. It's a great & easy start.

On a sidenote: I've spent quite a lot of time reading/Researching stuff on this forum. For instance guys like ualaa have posted lots of useful stuff in the past. What I do is click the nick, and in the user profile click on statistics and then 'Find all posts by Ualaa'. I mention him but there are a dozen of others as well. The info/tips I gathered from their posts is impressive. Even more, when I do a search on the forum, I'd rather add a nickname to my search than just get all posts. I find it more effective this way.

Well just some general info from a fellow noob/newbie :P