There are as many schools of thought and meditation methodologies as there are people. What resonates with me may not resonate with you.
Having said that, "Streams of Wisdom" by Dustin Diperna is, IMO, the finest 40,000 foot view of meditation and spiritual development that I know of.
For an actual no bullshit practical guide to meditation Eckhart Tolle's "The power of now" is what I would point to. You really need nothing more than this book.
