How pretty. Learning to read patterns takes some time. There is a Glossary link at the top of the page that I've used a lot, it helps with abbreviations and there are some videos available through links there. There are lots of Free Videos on site too. Don't give up because something isn't clear, ask here. There are lots of helpful knitters who love to assist others. I'm glad you found KH before you decided you couldn't do it.
I should never overestimate my basic arithmetic skills.