ok I'm here and rested up - at least until I husk and freeze these 80 ears of corn *gasp*
LONG POST WARNING
Basics:
I love being a Resto Druid. Healing as a druid is much different than any other class. Restos are primarily
proactive, as opposed to the reactive we see with priests etc. In my opinion, this can make the class a bit more challenging at times (which I like) and requires a "thinking healer".
While priests have HoTs, they are secondary heals. In the same vein, healing touch (and even Nourish) are secondary when playing resto. Although I do use Nourish quite frequently, it isn't the most likely to show up in my top 3 heals.
Basic Necessities:
20k HP (raid buffed)
400-500+ mp5 (more is better, but not TOO much more)
Yesmina has a lot of mp5 (always has). With the new buff they did to mp5 items, she really is over the top (I very rarely use innervate and never use potions). When I first started running raids, I would always run out of mana. It frustrated me to no end and I started focusing on mp5. It is now very rare that she even drinks between fights (which is good and I'll explain why a bit further down). But she has a bit more atm than I'd like, especially with the changes in 3.0 (?). Some of her spells now regen mana, she has points in the boomkin tree for regen etc. That being said, make sure you have 400-500. Having a decent amount of Mp5 also means you don't have to worry about your mana pool as much.
ETA: I just checked her and with patch changes and new gear she is now sitting at 693/415 unbuffed. That seems about right for her.. I will update and let you know!)
What to look for in Gear (and in what order):
Spellpower
Spirit/Int
Haste/Crit/MP5
Stam
I have a tendency of going for SPI over INT. INT is terrific, no doubt. The kicker comes if you are running with a poor tank or a group you don't know. Since INT increases your crit and restos have very high threat (and little to no mitigation) this can spell trouble! Now if youre running with John as your tank, you should be OK. I am going to be switching out some of Yesmina's mp5 items for INT, but slowly. Her crit is only around 18% (crazy low compared to a boomkin huh) but I'm only looking for a little higher. I do like Living Seed (crit = seed = heal on hit) and big heals, but they are worthless if she is dead. I adore SPI, it is very important for restos. Most items you'll get from ULD etc will have a good balance.
haste versus crit: I think Yesmina has an equal number of items. I usually pass crit items to dps when in a raid, out of courtesy. They are both nice stats, but not anything that is high on my "gotta have it" list, they simply come with the gear (haste is really only useful on nourish, but even then it is a minor difference).
Build/Glyphs
You can check out Yesmina's build on the armoy, I think. The build she has is for RAID healing (although she has good enough gear and I have played her for long enough that it works in 5 mans just fine). The glyphs she uses are Swiftmend (awesome), Wild Growth (generally my top heal) and Nourish. Rejuv is good for 5 mans, not so much 10/25. At one point I had the HT glyph, but since I keep HoTs on my targets constantly, nourish really takes its place and HT is rarely used (nourish is only truly effective with HoTs on the target).
Healing
Like I said earlier, druid healing is proactive. A good druid will see any change in HP, or even a chance of it, and throw a HoT. I almost always throw a regrowth as the tank is counting off to go into a pull (if you throw it at the right time you will not get aggro.. it really is about timing and can be tricky so don't blame me if you die). If you let someone get below 20%, you will be in a tough spot - and playing "catch up" is NOT what you want to be doing.
Healing up between pulls is always good (why I like not having to drink!). We are the best mobile healers in game, take advantage of it.
Tanks should have HoTs rolling always, even at full hp. If you have a rejuv on him/her, it will pick up any extra damage that might be ticking and you can always throw a swiftmend if they get a damage spike. I throw: regrowth, rejuv, lifebloom in that order. I may toss a swiftmend in there too. If they are taking a lot of damage, I make sure my HoTs are on and spam Nourish (replenishing HoTs as needed).
Since the patch, you will want your lifeblooms to actually bloom. It used to be common practice to roll 3 of them, but that's just not efficient anymore. The spell costs twice as much now and it's just way too mana intensive. Single lifeblooms are where it's at (although if I am really full on mana in a raid I might roll 3) and will give you back 1/2 the mana cost at bloom. If the everyone is taking damage, I like to "seed" raid with them and it works brilliantly.
Don't expect to be top healer in your raid (unless assuming the role of main healer). Thats not what we are there for, imo. We can do the big (direct) heals in emergencies, or if the other healers simply aren't up to par. But ideally, we are there to keep the HP ticking, keep people topped off, and generally be the other healer's helpers. We smooth things over and give people time to think. It is more important than it sounds and is often neglected.
Our 10 man has just 2 healers so if main healing raids is what you want to do, it is perfectly acceptable (and fun). I have seen plenty of restos at the top in 25 mans, I simply don't believe that is the most efficient way of doing things (unless you have no other choice but to put them in this role). I really like being a main healer, it is very challenging (less challenging once you find out your mods are disrupting your gameplay, which has been happening to me over the past few weeks and making me a bad healer

) and requires a lot of thinking. But I also really like being the one who makes other healers jobs easier, and I know how important this is.
Long post, I know. But I have a lot to say about it! I've been playing Yesmina for about 5 years (I think), and I simply adore her. I have never gone into a different tree (although I have a few TPs in boomkin that help healing), even while leveling. I considered the dual spec, but my other spec was going to be a different way to heal haha.
I don't claim to be an expert, but if you have any other questions feel free to ask!
PS: I don't use mods except utility mods like DBM, itemrack and fishing buddy. A lot of people use healing mods, I have no problem with that. I just think it is best to be prepared in case they break, and I also like the challenge (blizz UI is set up pretty decently for me anyways).