Buying property at a tax sale

[Dmitriy Fomichenko]

I'm considering buying a property at a tax sale, county of San Bernardino, CA 

(Southern California).

What should I lookout for? Are there any resources someone can recommend for me to learn from? Would love to connect with someone who is doing this on regular basis, preferably in the same county, or at least in the state (I believe tax sale and redemption laws are the same in the state regardless of the county, am I correct in this assumption?).

Any info you can provide that would be helpful will be appreciated!