Non-Secular, for All, Vipassana - The Mahasi Approach

Mahasi Sayadaw

Sitting Meditation, Noting the Rising - Falling of the Abdomen and Sitting Posture.

Walking Meditation

Instructions to Insight Meditation by Mahasi Sayadaw

http://www.tathagata.org/DhammaTalks/Instructions/Mahasi_Instruction.html 

Teachings of Mahasi Sayadaw

http://www.accesstoinsight.org/lib/authors/mahasi/index.html