I'm still not sure if the quest (the robber's nest) in Stonefield will be suitable for your level.
1.Have you spent all your learning points on damage/protection upgrades?
2. In Tirin Abbey, you should also get a side quest- Search for my Roots (in the chest in the abbey). But finally it will lead you to Stonefiled and Ledur.
3. You mentioned you got nearly killed by a giant spider, well, they are pretty rare, but if you come across them, they are quite deadly. I guess you shouldn't get discouraged by one Tarantula

The road to Arcane Sanctum is not so dangerous.
4. Personally, I always head towards Sanctum first (even if it means running a lot form enemies;p) because there you can buy :
-stronger healing spells
- paralyse spell ( REALLY helpful, you probably remember what the spider did to you;p)
-light spell ( a must-have for exploring dungeons).
5. When you were in Giliad, have you noticed a board with Waned Quests? You can try some bounty quests.