My beliefs and meditation-prayer practices are according to the Christian Faith, but "sitting quietly, doing something" is an apt description whether it's Buddhist meditation or Christian mental prayer (a Western form of meditation).

I am happy to share with readers here the most excellent compendium of the Ignatian method of Christian mental prayer that I have ever encountered:

- Fifth Treatise: On the Excellency of Prayer

http://www.holynamesoftware.org/OnPrayer.pdf

The following essay is a real treasure too:

- The Practice of Lectio Divina

https://docs.google.com/Doc?docid=0AdgpYJu8XEUoZGRxc2Z6cWtfM...