If you read "The reformed Doctrine of Predestination" by Loraine Boettner, that book is excellent, a must read 'round here.
It'll answer every question you have but didn't realize you had, in a simple & straight forward fashion.
My teenaged sons (now age 14 & 15) read it last year & it didn't give them cancer, or hurt their backs or anything. Try it out!
Most libraries in the US do 'inter library loans' where if they don't have the book, they'll seek across the country for it & order it for you for free, just get it from them, or Cumberland Valley Bible Book Store is dirt cheap resource for reformed books.
"Easy Chairs, Hard Words" by I can't remember is another dandy, easy book.