I started D3 with a Barbarian. I really liked the Cleave skill as it went through the levels. But, somehow when I bring up my Skill window it only shows "Passive Skills" for my left mouse button. How do I get it back to "Primary Skills". Also, where is the list of "Active Skills"?
By default, the game restricts you to assign certain types of skills to certain buttons and keys, probably to avoid that newcomers get lost among all the skills at higher levels. If you activate "elective mode" in the settings, you can assign skills almost as you like.