Start with Cyprexx, Field Asset Services, and Altisource. They are always looking for new contractors to burn. FAS might make you purchase their E&O insurance to be able to work for them. Otherwise find a regional contractor in your area that works with LPS, MCS, and BAC. Have them show you the ropes because chargebacks can be a [censored]. And don't expect to be paid for 60 days or more if you're working with a regional.