Read it several times, several ways. Tackle a chapter this way :
Read the Table of Contents and all its bits to get an idea what is covered.
Read the first paragraph and the last paragraph in the chapter.
Read the whole chapter FAST and let the theme/ideas all take shape, maybe do this a couple times. Read the first sentence and last sentence of each paragraph in one of these passes.
Jump back in slowly and carefully, bring the highlighter, take notes.