I am a recent start up have not completely jumped in.....Working for the man and myself.

I am gearing up for service only. The area I'm wanting to get in bed with is Commercial & Residential property management companies. I already have the grocery list of them A thru Z.
And I already have a plan. I was wondering if any of you guys out there have experience with this market and could sling me some of the " Do's and Don'ts". Thanks