Reddit mentions of Astral Dynamics: The Complete Book of Out-of-Body Experience

I see. But no worries, information about how to do them are all over the internet nowadays.

There's this three-part video seminars by Michael Raduga "Leave your body in three days":

https://www.youtube.com/watch?v=YQjAIlFZWWc

https://www.youtube.com/watch?v=9Dj9gTiLHf8

https://www.youtube.com/watch?v=7BMnGi8yxTQ

He also has free article and e-books that might help you here:

https://obe4u.com/how-to-lucid-dream/

https://obe4u.com/lucid-dreaming-books-free/

And other books that you can try finding online for free or purchasing to support the author:

Astral Dynamics Book by Robert Bruce:

https://www.amazon.com/Astral-Dynamics-Out-Body-Experience-ebook/dp/B008K06AOM

Journeys out of the body by Robert Monroe:

https://www.amazon.com/Journeys-Out-Body-Out-Body-ebook/dp/B00OWWOM2O

And many others, too.

And there's also always the Wiki of this subreddit that contains basic information that will hopefully serve you well, including dispelling misconceptions about AP, Self-defense in the Astral Planes, and various other reddit posts, articles and websites that contain very useful information. We also made sure to organize a table of contents for this as well to help with information overview:

https://www.reddit.com/r/AstralProjection/wiki/index

If you truly want to go back practicing this skill, it seems you will have to go back from square one, but at the very least it seems practicing the basics again will catapult you quickly towards immediately being able to induce conscious OOBE/Astral Projection, like a muscle memory being awakened once more.

It's a whole new world out there, I really highly encourage you to continue; this skill will help you tremendously on your journey towards personal and spiritual development (I gave some ideas on how in this sub's wiki, around the "Benefits of Astral Projection" section).

Best of luck on your journeys.