I did that a lot in my white light days because that tends to rely more on absorbing other people’s ideas and beliefs, though I always eventually got round to finishing them.
But I now have probably the world’s smallest occult library, at least for a practicing magician who’s not short of money and space, and lives in a country where you can get this stuff delivered like it’s a bag of groceries!
Honestly I prefer to make my own stuff up, rituals and methods even, that was how I got started and it’s stood me in good stead, as it turns out.
That said, Evoking Eternity is a keystone book that will save trial and error, and I would recommend it to anyone. Also, Hermetic Magic by Stephen Flowers, and above all, The Kybalion PDF, archived link (we don’t trade PDFs on here as a general rule but this one is okay, the text is out of copyright and the edition was given for download from the site that created it).