Its one of the best and most difficult books in the world, very good but hard enough to scare a lot of potential new readers, if you want to read it and don´t die in the process, here´s some useful tips:
1.- If you are not an English native speaker, DON´T read it in English, read it in your mother language, your English level is irrelevant here, believe me, even for a native speaker the book is confuse.
2.- Don´t go alone in this adventure, there´re some other guides and books about this one that can be a priceless partner here, if you get lost in the road (very common) just search help in a partner book.
3.- Be prepare for stay in the same book for months.
4.- if you don´t understand all (and you will not), just continue reading, try to catch all you can, but always remember, every part of the book its a different part of the same puzzle.
Good Luck :)