The short answer is, you are going to have to gear for healing, as it requires completely different gear than feral. Though if you don't have a rogue in your group, I am sure you'd be able to pick up Feral gear while your gathering healing gear. Each PuG is different, just ask if you can roll on things for your offspec, but dont take gear from people who may need it for the instance you are doing. Most people are understanding in 5 mans that you will want gear for multiple specs.
Anyways, I've compiled a short list of links that I believe will give you a hand understanding the Druid as a healing class, and available options from lots of different players.
To start, here's a quick summary of what people view druid healers as:
Resto Druids: Druids are perhaps the
most necessary healer in any 10/25
composition. Mostly because of
Blizzard's encounter/item design
during and after Ulduar. After Burning
Crusade, Druids were trying to find a
niche because Blizzard nerfed their
insanely awesome Lifebloom. I think a
lot of Druids went into Wrath looking
to continue being tank healers, and
it's something they're still good at.
However, they found their niche with
raid healing through something called
Rejuvenation Blanketing. Basically, it
just means that they put Rejuvenation
on as many raid members as their
haste/positioning allows. Blizzard
reinforced this through incredibly
strong set bonuses for T8 and T9 that
boost the power of Rejuvenation
incredibly. In addition, the pulsing,
constant raid damage of a lot of
Ulduar/ToC fights basically plays
right into Druids' hands. Rejuv
blanketing puts out a stunning amount
of throughput that is almost
unmatchable. Like I mentioned, rolling
HoTs on tanks is also a strength of
Druids and really evens out tank
burst, though I seldom assign them to
tank healing unless very necessary.
They can tank heal just fine, but it's
a waste of their true power.
From: Druid vs The Healing World
There's also been an incredibly useful survey of Druid healers based on a survey called "Circle of Healers", with many blog post responses:
Druids
- Lathere, Druid, Restooration, Hots & Dots
- Kailanii, Druid, Restoration, Sheep This
- Kotakh, Druid, Restoration, From Miss Medicina's Blog Comments
- Sammich, Druid, Restoration, Kungaloosh
- Kaelynn, Druid, Restoration, Dreambound
- Aanthe, Druid, Restoration, The Angry Healers
- Verile, Druid, Restoration, Rejuvo
- Sersokhi, Druid, Restoration, Sushi-Cookie
- Kochi, Druid, Restoration, Rambling Dwarf!
- Tatia, Druid, Restoration, Dots & Hots
- Isla, Druid, Restoration, Unreal Realities
- Dysmorphia, Druid, Restoration, Dys-Morphia
- Hermia, Druid, Restoration, Tree Of Doom
- Ikkulu, Druid, Restoration (PvP), DorkArt
- Firewood, Druid, Restoration, Tree Haelz
- Bellwether, Druid, Restoration, 4 Haelz
- Lissanna, Druid, Restoration, Restokin
- Forrestump, Druid, Restoration, Forrest Stump
- Wingood, Druid, Restoration, Evian Tree Bear
- Elsen, Druid, Restoration, The View Through the Branches
- Killh, Druid, Restoration, WoW Frost Mage / Piou Piou Blog (French)
- Oestrus, Druid, Restoration, Divine Aegis
- Buel, Druid, Restoration, Buel's World
- Tazha, Druid, Restoration, Wild Growth
- Innoue, Druid, Restoration, Druid Tree
Other topics that may help:
Resto Druid - Starting raiding mana regen numbers?
What spellpower should a resto druid have before raiding
Building a Balance/Resto spec — DPS while healing in heroics?
No
Once you account status goes to "Frozen" (expired) you can't go pass the main menu so it doesn't matter if you are under lvl 20 when you cant select that particular character.
What you can do is have 2 WoW accounts (not Battle.net accounts), one is "frozen" and the other is "starter", you will need to create new characters but its purpose is to check updates and chat with people. When you subscribe (unfreeze your main account) the other one will remain "starter".
Now what I don't know is how to add more wow accounts... I have 7 of them name WOW1, WOW2... The problem is I was adding them when it was 10day trial and you had button in Battle.net account "add 10d trial" any you could click it anytime. Try to find something like that.
You could also register another WoW account with different username and pass and then merge use the merge option on your main account.
Best Answer
People may want to lock a character into a specific PvP group. The PvP groups go from x0 - x4 or x5 - x9 (eg 10 - 14) so by locking to 10, 11, 12, 13, or 14 you stick in a particular group.
It's mostly done by people who are engaging in twinking, which is kitting a low level character out in the best, most expensive PvP gear available at that level and just playing a lot of PvP.
Taken from Nick Bayley's comment: Another reason why people level lock, although not as popular, is to do old dungeons/raids at the level they were meant to be done at. However, with the talent changes, glyphs and inflation of gear, they don't pose the same challenge as they did when they were current content.