Meaning of Mantras

Om Gam Ganapataye Namah

Om Salutations and Prostrations to Lord Ganesha.
Om has no meaning, it is just the pure sound of the consciousness we call Brahman or God. Lord Ganesha is the Lord of obstacles and is always invoked first before starting any spiritual or material (such as using your computer) undertaking. The vibration and the energy of this Mantra will actually remove all inner (in your mind) and outer obstacles.


http://www.sivananda.org/teachings/mantras/mantras.html