In regards to the original question, yes... absolutely.. I cannot stress it enough. Faith should be the only guide in your life. 100%. I could tell you stories but there are plenty here already. It has helped me thru addiction, suicide, death, life, jail, the real wolrd, good times, bad times, ups, downs, strikes, gutters... you get the point.
As for the 12 steps, there are different versions depending on which group you listen to.... the 2 most common AA (Alcoholics Anonymous) and NA (Narcotics Anonymous). Here are links to both:
AA:
http://www.recovery.org/aa/misc/12steps.html
NA:
http://www.nawol.org/2003_12steps.htm
Learning and completing these on your own is not recommended and very difficult. If you are stuggling with addiction or alcoholism, I suggest finding a local group. You can call these numbers to find groups in your area:
AA: 212-870-3400
NA: 818-773-9999