Buying forclosures (at auction) is MUCH MORE DIFFICULT than you think. First, you typically have to pay for the property in CASH at the time of sale. Good luck with that.
Second, you will have no ideal of the condition of the property, unless you somehow manage to see the inside.
Third, if there are people living in the property at the time of forclosure, have a good time getting rid of them. They will just sue the crap out of you and tie you up in courts if they know what they are doing, and meanwhile you have just bought a property you can't rent and are providing free shelter to the jerks who couldn't pay their mortgage in the first place.
Fourth, you have to do A TON of research on EVERY property you consider. That usually means going to the public records to make sure there are no Leans on the property. If there are, you will have to pay those. If a house forcloses on a second lean, then you are liable for the first, which can possibly be more than the value of the house!
Fifth, out of 50 properties that go into forclosure, probably 2 will actually be auctioned off. You have no way of knowing which ones it will be.
Sixth, you will be at an auction competing with people who do this for a living and will screw the crap out of you. If they see you bidding on a property they don't know about, they will take it from you just to screw you. They also have a lot more resources and cash at their disposal. The whole process is extremely corrupt as well, and if you are waiting for any specific property you will never know why it never comes up for auction. The agent could have given it to his best friend for all you know.
IMHO the whole business is very time consuming and simply not worth it. If you want to try it, go ahead- I did. but the headaches that result can last a long time.