For about $6 you can order the Rule and Case book from the NFHS.
10 Rules, they aren't that hard....It's the sub-sections of the rules that are what get ya!
Don't know about FB and Bb...I don't officiate those....Complexity is all in your understanding of the rule. There are somethings I am really clear on and others that I don't have great clarity on cause I have not faced those situations...