There are 4 specs that Druids play in classic PVE. Each of them is geared towards different rolls that the resto druid might take up, whether it be tank healing, raid healing, or a more flexible healing/tanking hybrid build (You’ll carry two sets of gear).
These builds are commonly called Moonglow, DeepResto (Swiftmend), HOTW/NS (Heart of the Wild/Natures Swiftness), and Regrowth. I’ll give you a quick blurb about each and let you decide which fits you best.
Moonglow:
http s://classic.wowhead.com/talent-calc/druid/51000533120013–505103105115)
The talents in Balance can be moved around as you please EXCEPT for the Moonglow Talent and the Natures Grace talent. Those are the keystones that you want. In this build, it’s all about mana efficiency so you can continuously cast your heal. This is the build most druids run. For the most part, you will be casting Healing Touch Rank 4 nonstop. You may use other ranks as needed, but rank 4 will be your bread and butter.
Deep Resto/Swiftmend.
http s://classic.wowhead.com/talent-calc/druid/5140000302–505203105315051
This build is deep in the restoration tree for the keystone talent of Swiftmend. This build is suited more to rolling HOTS (Heal over time spells) on tanks. It is much less mana efficient so I would suggest using it only once you’re more comfortable with you abilities. The talents in balance are situational, generally you are just there for Improved Thorns.
With this build you will keep Max Rank Rejuvenation up on your tank, and if your guild wants it you can also keep Max Rank Regrowth as well. Once again, you will be using Healing Touch Rank 4 as your standard heal.
HOTW/NS
http s://classic.wowhead.com/talent-calc/druid/-503050130302215-05501310501
This build is your standard hybrid tank/healing build. Druids are very inneficient healers before talents, so this build goes deep into feral to get the Heart of the Wild talent. That will give you a huge boost to your mana pool. It’s not uncommon to see Druid’s in this spec having mana pools as high as 8000. This spec is set up to also give you enough talent points in bear form abilities to tank. You will not be set up to main tank a raid, but you can situationally tank some bosses, such as picking up adds on Gar or Sulfuron Harb in molten core. You will need to carry two sets of gear for this. Like with Moonglow, your bread and butter heal will be Rank 4 Healing touch, with situation uses of Rank 3 and Max Rank. You also take the Natures Swiftness talent so you can pop off an instant Max Rank Healing Touch when there is an emergency.
Regrowth:
http s://classic.wowhead.com/talent-calc/druid/4140050312001–50510310501504
This build is the “endgame” build for druid healing, so to speak. It requires very good gear to be effective. It’s focused on the interaction between Improved Regrowth and Natures Grace. Basically, you gain a 40% crit rate on regrowth from talents, and Natures Grace makes your next spell 0.5s faster after a crit. So you will be casting extremely fast Regrowths and Healing Touches. Regrowth is a very mana heavy spell, hence the need for good gear. Your balance talents are once again up to you to put wherever you like EXCEPT you must take Natures grace. There are a few ways to play this spec, but generally you will want to keep a regrowth on tank to fish for crits, then you will be casting fast either Rank 4 Healing Touch or a lower rank of Regrowth (I prefer Rank 5).
Those are the standard PVE builds. There is also a Feral Charge/Swiftmend pvp spec that works fine as a Deep Resto build for PVE, although you sacrifice a few talents better for PVE in favour of the PVP focused ones.
Best of luck!
PS: Fix the links by deleting the space between HTT and S
EDIT: For some reason, those links lead to a now broken version of the talent trees. This guide over views all the talents, so just look here:
http s://classic.wowhead.com/guides/druid-healing-talents-builds-classic-wow