1. Use DP and read the books they read and discuss it just like they did in DP.
2. Use Christian Light Education reading to get a basic understanding of lit. analysis in reader/workbook form and then you'll "see" these things in books yourself so you can point them out to your dc
3. Use PASS LA units 6
I read DP and How to Read Like a Lit. Prof and took notes. Then while I read with my dc, I can point out things they don't see. How to Read Like A Prof. also confirmed the importance of being familiar with Greek mythology, Bible, and Shakespeare to be able to "see" the allusions to these earlier works.
A great little book is Writing About Literature, Edgar Roberts. I have the used Brief Tenth Edition from Amazon.