All the information you could ever need is all over the internet.

If the property you're buying is owner occupied, the investor concentration doesn't come into play because you will improve the investor concentration. 

Affordable, good coverage and an internet based system you can use to add/drop properties. 

for two reasons.you have a good amount of inventory to wholesale as you have burnt out landlords and you have old homeowners who want out of the neighborhood because it has turned from owner occupied to rentals.. some areas its just not a very feasible business to try to start.also its MUCH harder than the internet makes it seem and you do need money.. unless you happen to know a lot of folks with distressed real estate like through your church or family or what have you.. its sales and marketing business..

Have you identified a niche in real estate you want to concentrate on?

In terms of the strategy, pick one the interests you the most at this time and concentrate on it until you perfect it, then move on to add another strategy, and etc...

For example if drywall is down, I see that as an opportunity to update all of the cabling (internet, power, and cable) if needed or at least you know what it is when you check it out.

Instead of looking for something to assist in real estate investing concentrate on what you are interest it and prepared to make a career of.

It seems to me from my internet research that I can't touch the deposit unless he fails to pay rent or causes damage to the property.2- Is it wise to touch the deposit before he leaves?

I'm in Texas, and I concentrate on building CASH FLOW.