Dragging an item and releasing it to either the upper part of the screen (you will throw it) or the lower part of the screen (you will drop it). This will help with all the gear you find and cannot equip (without penalties). Switches will look like tiny buttons, these are just about always at eye level. Many places have items for you when you fall through. First level spells are simply just 1 rune combinations. As you're playing, you'll come across scrolls that have the combination you need in order to cast.

Do not face tank when fighting, you'll want to be side stepping and moving.