Are you talking about loan review in the sense of evaluating loans for credit quality? If so and if you have no training or experience in this area, you are being opened up to a world of criticism (both internally and from the regulators). Reviewing credit quality takes a good bit of training, both formal and on the job. In my opinion, it would take a couple of years of experience before you could even touch some of the more complex credit relationships. That said, BAI offers a loan review certification and training and I'm sure ABA and the state banking associations have some.
If you are talking more about reviewing consumer compliance requirements, check the regulators web sites. Training is also critical here.
My opinions are just that...my opinions.