Pa Auk Sayadaw and his work "Knowing and Seeing". A text that details samatha (deep access concentration and the jhanas) as well as a variety of vipassana techniques. Considered the prized text of the Pa Auk Forest Monastery in southern Burma.
You may find this book helpful:Wisdom Wide and Deep: A Practical Handbook for Mastering Jhana and Vipassana
By Shaila Catherinehttp://imsb.org/books/wwd.php
It is essentially a commentary on Pa Auk Sayadaws commentary.
This is our foundation: to have sati, recollection, and sampajañña, self-awareness, whether standing, walking, sitting, or reclining. Whatever arises, just leave it be, don't cling to it. Be it like or dislike, happiness or suffering, doubt or certainty... Don't try to label everything, just know it. See that all the things that arise in the mind are simply sensations. They are transient. They arise, exist and cease. That's all there is to them, they have no self or being, they are neither ''us'' nor ''them.'' They are not worthy of clinging to, any of them. - Ajahn Chah