Procedure I
1. Place the hand(s) upon a book. (yes you could just place your awareness there without the hands, but the pairing of the physical gesture with the act of placing your awareness there helps automate the whole process later so that it comes to you without any particular effort or immense strain later on)
2. Having placed the hands there, your awareness is now centered on the book. You now condense the astral light around and into the form of the book.
3. The light thus condensed registers the form of the book exactly and becomes a copy of the book. Satisfied that your astral-book is ready, you then lift it up out of the physical copy (by intention/will/imagination) and continue to look at the book with your mind's eye.
4. You now proceed to any further necessary programming of your thoughtformed astral book, such as trying to empower it / give it duration so it doesn't immediately/rapidly dissipate when you take your attention off of it and you can keep your copy around.
5. You open it up to a random page, then begin reading it, make sure the words don't randomly mutate or shift around on you and so on, and then check that page against the exact same page in the physical book to make sure it's the same.
6. You may now recall that book later, or store it in some manner such as placing it in your astral palace on some bookshelf or whatever, or maybe some kind of computer or other means of organization like an InfiniBook that has an index of all books you store in it and it can morph and display any books in its index for you by you intending it.
Note concerning ritual-programming: placing the hands on there is a symbolic act. When developing psychometry like I did it above, weird side-effects happened for me, like picking up all kinds of random stuff connected to objects and persons and so on. The development of the ability for me was messy and not well controlled. By really being specific about how you intend to use your psychometry and thinking over the formula, thinking over what you want to pick up in relation to the object, and connecting the whole matter to a RITUAL you have more control AND automation over/of the whole process. The ritual makes it AUTOMATIC when it's repeated later, without you having to brute-force everything. It also gives you more control, and adding stuff in like maybe a glove, a ring, certain objects, etc. can help you retain further control over the whole thing and prevent you from accidentally psychomancing EVERYTHING you touch.
It also really helps that EVERY DAY and especially everytime before I go to sleep, I always visualize each number at least once, and visualize the whole alphabet; each letter appearing to me silently without me reading it, and same for the numbers. This very useful meditation has been a precursor for me developing a lot of different abilities. I've talked about it before on here years ago and many times since, most of you know what I'm talking about.