Share your wisdom with us in homeschooling High School.

I feel like a brand new homeschooler since we are starting high school.
Any book suggestions? Tips? Things to do or not to do? What worked for you and what did not work? How did you make a push for independence? How did you set up school work accountability? Did you work in dual credits? AP classes (where did your kids take these and the tests?), dual enrollment? College classes? Online classes? An non textbook things you did? Oh, the list seems endless!