You're received some absolutely fantastic suggestions already, so I won't focus on 'how' - I'll focus on 'why'.
Why do you want to read this book?
Do you really NEED to read this book? Why?
Why/How will this book benefit your life?
Why aren't you enjoying reading this book?
Can you get the same information from a better source - ie. easier to read, clearer, simpler, in audio, from a speaker, from a classroom experience, etc?
Hope this helps,