I just recently signed up for BiggerPockets.

But we are very careful with tenant selection and find the creams of the Class C resident pool.I think you're going to be disappointed with paying out more than $50K per unit for anything that only yields $100/month positive cash flow. 

What to look out for in determining potential neighborhoods (I am not local to the area and is curious on how "hot" neighborhoods started out and what signs to look out for)How bad can a bad investment be?

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Account Closed - Request assistance with the 'Events' page - Can we add Germany as a location and no need to select a state.

does your lease say he has to return to the condition on lease signing ?

They may take the listing to have a sign in the yard and some exposure, but every newspaper ad/minute spent is a gamble for them.

and will reply to your offer letter by either calling you or signing the actual offer and returning it back to you ready to move forward.That's how I find the "motivated sellers" ready to deal.Then, once I received hundreds of these offers back, I then examine the property specifics and work out the numbers to see if the deal is good or not based on the numbers.Also, your offer letter will state exactly how much you're willing to offer to the owner so you are already in a position to make money should they respond...and some of them will. 

You just took a giant leap in the right direction; signing up on Bigger Pockets!

I typically show  the apartment until I have a signed agreement/deposit in hand.