What I was talking about in the previous post is two topics. So, it depends what you're looking for.

There are tons of books and meditation courses. It depends what suits your style. eg, The Mind Illuminated https://www.amazon.com/Mind-Illuminated-Meditation-Integrati... is the most popular meditation book right now. There is even a subreddit dedicated to it. However, it is quite the read, guiding as one progresses, mirroring how a teacher would do it.

Culadasa, who made The Mind Illuminated, is working on another book that goes over the second topic I was diving into (like Noting Meditation). It is incomplete with no eta. It would be a 102 book for after one finishes The Mind Illuminated.

There are other resources on the second topic, but right now both topics are ideally taught with a teacher, especially the second topic, so progress can be aided and verified.

What goal do you have? I can possibly write a skinny as to what to look at and where to go to achieve that goal, including providing more resources.

Also, just in case you do not know CBT, with a good therapist, is, I believe, the only kind of therapy that works well on depression. CBT takes from the techniques in the topics above, and then boils them down into a light version that can be worked through at an accelerated rate.