My favorite book in the whole world on manifesting money is "The Science of Getting Rich" by Wallace Wattles.
The book was written in 1910 which means it's so old it has no copyright anymore; there are free ebooks all over the internet you can download. You can also buy paperbacks from people if you wish. (My favorite ebook version is linked at the bottom of this post.)
Here is why I love it:
Is your home cluttered? Your car? Your closets? Your garage?
Someone once asked Charles Fillmore (author of the book PROSPERITY) what he believed the greatest obstacle to prosperity was for most people.
He answered without a moment's hesitation.