I’d suggest you level as either fire or frost as arcane is pretty mana intensive and the only reason why Mages are going arcane for raiding is because of the T5 2p set bonus where Arcane Blast does 20% more damage while also costing 20% more mana.
Honestly I’d suggest Frost over Fire if you plan on getting to 70 without doing dungeons as it has more survivability just with Ice Barrier
I’d suggest this for fire…
https://tbc.wowhead.com/talent-calc/mage/-505002012303330053125-0530003013/1ACJFhNKQTwZVX2CBGKj1P
I’ve added Improved Blizzard in case the situation arises but you can just keep it to Icy Veins and go for something else like more Frostbolt damage for Al’ar.
And this for frost…
https://tbc.wowhead.com/talent-calc/mage/230005--0535003313130010201551/2CBGKjDHrmTNwZXy0AbbbF
Do what you want with the remaining points the main things are there. Frost is more mana efficient than the other 2 specs and if you ever go into raiding as arcane make sure to pick up T5 from SSC and TK.
This is my arcane spec
https://tbc.wowhead.com/talent-calc/mage/2500050302030150330125--053500031012001/0AbbbFH2CBddjdddHmnnr0bNbKqRVTXzY
You can swap around points in frost to get Improved Blizzard all that really matters is you getting Icy Veins and Cold Snap.
I’d suggest this. You level as frost, then when you’re 70 switch to fire and make your Spellfire and Spellstrike sets, go into SSC and TK to pick up T5 pieces while also getting gear upgrades such as Serpent-Coil Braid (from Morogrim in SSC). If they don’t let you in because of gear then run Kara, Gruul and Mag (wand from Mag is great).
The only issue with frost and fire in SSC and TK is that there’s one boss in each raid who’s immune to that damage. Hydross is immune to frost damage in it’s first “tethered phase” and can only be hit by frost spells while it’s tainted state and Al’ar, who’s just always immune to fire spells.
In phase one I raided both as frost and fire and I’ll have to say fire was more enjoyable, it doesn’t beat what fire mages were in classic with their shared Ignite but it’s still fun to play.
Once you’ve gotten enough gear and enough mana my Mage has 12,326 mana for example do note that you gain 15% increased intellect with the Arcane Mind talent and that 1 intellect is 15 mana so you can do the conversion for what your mana will be like that.
That’s all I can think of, just know that the talent suggestions I’ve made aren’t what the “meta” is it’s just based off my own judgement and truth be told I didn’t put much thought into the specifics. I will say though that my arcane talents are solid unless you want Improved Blizzard.
Thanks for reading.