Finding contractors

[Matt Neunlist]

Hi Everyone, I am just starting as a real estate investor but have been a real estate appraiser for several years.  Does anybody have any good advice for finding and choosing contractors and how to negotiate costs?  I don't have enough experiencing in home renovations to do it myself or in a craftsmanship way.  I know enough to do stuff at home but that is all well thought out and I don't have a deadline to meet.