Can I give you a little advice? Don't stress so much. You're right, knitting SHOULD be fun and not frustrating! If it says increase, and doesn't tell you what kind of increase, take that as creative license to do whatever increase you want to do. If they have a specific technique in mind, they'll tell you. Otherwise, it's up to you.
Most patterns are written for the average knitter... someone who knows all the basics of knitting, as well as pattern reading. But please don't feel like you're inadequate if you have to reference other sources. I think we ALL do that from time to time! And that is what teaches you more and more skills. Keep it up and pretty soon, you'll be an experienced knitter!