Start HL. Go to
Tools->Start Editor go to "
Help->Help on Using the Editor". Then go to "
How To Examples" and finally click on
"Make a skill a Class Skill".
I would recommend reading the
Glossary of Terms for the Editor. Then check out
FAQ#2 for all the places to learn about the editor including YouTube videos. Welcome to the wonderful world of using the HL editor which will be the most frustrating and rewarding thing you can do with Hero Lab.