Are you looking to lease on with a company or are you going into it alone?
Here is some help if you are going into it on your own:
Some of the shippers you may want to stay away from are the auto industry shippers. They always want a discount. I found that if you (An O/O) have a contract with a shipper, they seem to always want some type of discount. Some of the types of shippers you may want to go after are shippers that do bulk printing, or bulk mail. The medical shippers are another good source. The best way to start with a shipper is slow at first. Show your enthusiasm and ability. Prove your integrity then go after them to lock him in. It may be good idea to give all the credit to the shipper so he looks good. Most shippers have to answer to someone else, so the more feathers (pat on the back) they get the more trips you get.