But whenever you pray, go into your room, close the door, and pray to your Father in secret

Resources for prayer and meditation

Prayer of the church

Catholic liturgy
iBreviary (Has everything, in many languages; app available)
Universalis (English only, but can be converted for Kindle; app available)

Church of Ireland (Anglican)
Book of Common Prayer (A rich resource)

Lectio Divina
Christian Meditation

Web resources
World Christian Community Meditation
Christian Meditation (Ireland)
New Pilgrim Path (Ireland)

Jean-Marie Gueullette OP, Petit Traité de la Prière Silencieuse (terrific overview, great advice and lots of uncommon common sense; French only for the moment)
Henri Le Saux (Abhishiktananda) Prayer (simple, immensely deep, inviting; English)