If you got enough magic, try close wounds, or grand healing if you have a companion.Both are master/expert lv.
Nope, close wounds is adept and grand healing is expert. the higher the spell level the more experience you get.
Restoration is annoyingly hard to level, it doesn't level as naturally fast as other skills (for me anyway).
For healing spells you have to use them when you haven't got 100% health, they don't level at full health, so after fights you could heal with magic rather than let the regen rate heal you.
Repel spells level much quicker than healing spells, but are quite magicka thirsty.
You can cast the circle of protection (expert) or guardian circle (master) spell anytime for quick restoration levelling, but you need to be a high level to get the, in the first place, 70 for the circle and 90 for the guardian spell.