Unfortunately the world is populated by "dodgy" people, and having a camera in your hands does not make them any different.
If it's "too good to be true, then it 99.9% it definitely is".
You will get inundated with offers of Time for Images on CD (TFCD) which seems like a good idea when you need some good images but there is nothing worse for a model than a technically bad image, so choose who you want to do TFCD with with a little more thought.
A lot of people have a fast wealth of experience, so either they will pass that on to you whilst shooting you, or you need to pick it up and put it to good use.
No excuse for sloppy communications, text speak or obtuse emails.
I'd avoid anyone who takes out of focus pictures, Calls me "hun" twice on the same photo comment or that I work with and 2 months later still hasn't sorted out a reference, even though I did for them!"