Selfless service is a karma that un-clutch you from many of your entanglements. Guru is also into self-less karma and his works would also be for the upliftment of human consciousness. When you participate and support such works, his grace will remove your obligated karmas which will enable you to get better health, better finances and better lives. Omcean Self Realization Center, has several temple related projects going on always, in which you can participate physically at your interest and also support by donations.
Selfless service happens without expecting anything and by such service you will be freed from the pains of the obligated karmas that currently stop your material and also spiritual growth.