Pre requisites of wholesale property and Seller

[Hassan Tirmizi]

I have read a lot about how to wholesale but can someone shed some light on
1. What type of property is prime for wholesale and how it should be negotiated?
2. can you only put a contract on a property free and clear or short sale and foreclosed property are all the same?
3. If the property note is held by the bank are they open to wholesalers?
4. What should be the approach with the banks vs sellers?