Your questions is like " why should i get exited to buy a car" ... too generic ..Having said that ... its really doesnt matter where you buy/sell.. as long as you know the economic behavior of that location and price properties accordingly. ..Real estate is very local (down to Zip code level) ... 

HAR blog generically lists 1-10 days.

There are generic lease forms available online but I would stay away from them as the local/state ones have wording that addresses specific laws in your area and the local courts are familiar with them should you ever have any legal issues.

The information was very generic and could be found in any real estate book, BP post or Youtube real estate video.                                                     

Most of the numbers are driven off of generic percentages; 20% down payment, 20% of purchase price for rehab, 5% for closing costs, 6% for vacancy, and 50% for operating expenses.

(ie. seller pays this or buyer pays this as spelled out in the generic contract might be exactly opposite of what you and the seller agree to.)With all of this said, it is wise and realistic to write in contingencies that allow you time to do your due diligence.  

Quote from @Pedro Hernandez: That's a very generic question.

generic contracts are not a good idea..

I just reply to all of the "Is this available" messages with a generic message and funnel them into an open house showing.  

I was offered a 3.3% refi, but it would cost over 6K.I guess it could be a more generic question: if you buy a property with a conventional mortgage ( ie 20% down), at what point does incurring new closing costs make sense?