re: Virtual Assistants
I use virtual assistants for a variety of tasks including marketing (e.g. contacting FSBO's, sending out direct mail campaigns, posting ads to sell properties, etc.), research (e.g. running skip traces, pulling comps, etc.), bidding on auction homes (HUD Homes, online auctions), and screening seller leads (i.e. anyone who calls in from marketing). I found a couple of the VA's I found on oDesk (now Upwork.com) and the other two that I have doing pre-screening were referred to me from a property management company manager.
My virtual assistants are primarily based in the Philippines and the two pre-screeners are in South America. I pay them an hourly rate and bonuses for whenever we sell houses. In regards to training, I have a training module in my CRM/Project Management system and generally try to write everything down step-by-step and do a screencast so they will know exactly what they are supposed to do.
In addition to training them, I would say one of the biggest tasks is making sure you hire the right people. You will get a a lot of people applying for your jobs. Sifting through them can be kind of difficult but when you find good ones, hold on to them.
What else would you like to know?
cc: @Josh Singh