Start Level 1, Start the Wave(D key), then quit the round. You will get 2 Exp, and a Common White Item.

Some Stats That I found useful are:
+1 Tower damage.
+1 Stone per gather.
+1 Wood per gather.

Note: You can equip 2 of the same weapon, just Left Click, and Right Click for each hand slot.
Good Luck lad dees.

- Hold Shift while building a tower to place many at once.
- Support Towers stack, and work with your main tower.
- Remember to zoom out when the game starts.(Scroll Wheel)