Regardless of what many consider is a shit book, I for one recommend Necromantic Sorcery: The Forbidden right of Death Magick - Dante Abiel
It can be purchased from The BALG store these days. It’s an excellent book at It has many useful techniques that doesn’t require blood sacrifices, although there definently is in there too. The book isn’t for befinners though, because most of the applications assume that you are able to soul travel, divine and evoke as part of the curriculum. And not only that it leaves some parts out for you to find out for yourself, intentional gaps which must be filled with practical experiences and looking for references that’s inbwtween the lines or one person said: seeing the lines between the lines…
However what’s written is useful and is a great time just for the sake of improving your knowledge on the occult, as it has an appendix in the back at least that’s in the original.
Other than that I’d recommend S.Conolly’s book honoring death.
As well as the books from Ariagnee Arcane Services.