I remember when I was in High School I took Chemistry my junior year and my I really liked my teacher. He was very organized in his lessons and explained the element process in a simple way that wasn't overbearing. He scaffolded basic chemistry throughout the semester. We started out with simple elements and progressed through the semester with various elements and more difficult chemical components. I know from other people that have taken chemistry, they had to memorize the whole periodic table, I think that is a little much. He would have us work with the periodic table daily to where we were able to understand most of the periodic table and it's elements by the end of the semester. Obviously, experiments help, my teacher had multitude of experiments. But, he also used manipulatives for the visual and aesthetic learners. Every day he would have us do a small worksheet, yes it was a bit mundane, but the basic level of chemistry is just simple math, and the worksheets helped me comprehend how atoms and elements form and whatnot. Through in some online database stuff, videos, experiments, and some worksheets, and you should do fine.