Keeping skills on your bar that you are not using is a good idea, you don’t really need that much early on. Once you get to 12 and unlock an ult, you can use that for one of your leveling skills, and use 2 bow skills (poison and volley).
Level 1-15 use bow with poison arrow, and clannfear morphed for the heal. That will pretty easily and quickly get you to 15.
Your primary damage dealing is going to come from the bow and duel wield skills, but there are quite a few good sorcerer skills that have stamina morphs, or are still good as magic morphs. The big ones are:
Dark Exchange – 1s cast to spend stamina and gain health and magicka (you can move at normal speed while casting).
Unstable Clannfear (4) – Pet does 15% more damage, can charge and tail swipe. Upon death or unsummoning he heals you for 35% of max health.
Lightning Form – Applies Major Resolve and Major Ward buffs (increased armor and resist) for 15s. Deals damage to nearby mobs every second. Morphed into: Hurricane (S) (4) – 15s duration, and now uses Stamina, radius grows in size (up to 9m) and damage (up to 225%).
Surge – Applies major Brutality buff (increase weapon damage by 20%). Also heals on critical hits. Morphed into: Critical Surge (4) – Critical strikes heal you for more (50% instead of 40%). While this skill is still no longer king of AoE healing, thanks to the reduced cool down on its effect and the removal of silly DoTs causing it, the ability is an effective heal alongside the excellent buff.
Those are the main sorc skills to focus on, and fill in the passives that seem to make sense. Bow/Duel wield skills to shoot for are:
Poison arrow
Volley
Flurry – 5 rapid attacks doing higher damage on final hit. Channeled Ability. This can be morphed to heal you on the last hit. Can be useful early on before you have crit surge. One of the reasons to take duel wield for leveling.
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Hidden Blade – Throws a dagger dealing damage and snares and applies Major Brutality for 20s (20% increase to weapon damage) You don’t really need this, as you have crit surge providing you major brutality. I only use it on my melee bar, because sometimes I’m lazy and don’t bar swap, and just do hurricane, hidden blade, and steel tornado. This works just fine for trash packs. Not essential though.
Whirlwind – 360 degree AoE attack, increased damage against low health targets. Morphed to: Steel Tornado (4) – Increases radius. Great morph, your radius is now 11m, if there are mobs on your screen they are getting hit, those pesky bowmen and casters that spread out when you engage are not safe from you.
You can fiddle around with other stuff, as that’s most of the fun of the game, this is just what has worked out well for me. 2h is certainly viable as well, but duel wield IMO is better for leveling. You get heals and great AOE with duel wield. 2h is more of a PvP thing.
The combination of hurricane, volley, and steel tornado, while you have crit surge going, is what makes this so ridiculous for PVE. Start your hurricane, plop down a volley, and then spin to win while you’re getting healed. You can just plow through stuff like delves etc.