Reading and Prediction #2

When we read lots books, peoples feel really hard to read and predict. Because, some sentences are too hard or some vocabulary.

But their is a one good helping solution. which is "Summary". Summary is really help for before reading a book or while reading a book. Because, when we read a summary of the book, we can get sort of idea of what the book is about, main characters or something big situation etc.
which make easy to understand book.

Specially for me, my english is second language, so i need a lots of time to understand read a english book. So, i always use summary for get some ideas of my book.