How to find your FI number: Determine your annual spending in retirement, yes, you need to have a budget!

For questions 2 and 3, You'll need to check the state where the property is located to determine.

You'd find similar comps as close by as possible and determine ARV that way.

Determination matters.

Once you determine the after repair value, you can look at the repair cost and see if the deal is worth it (ie if there's enough "meat on the bone")

We started out buying our own real estate as investors and then started a property management company after we determined it was more than a part time job. 

What are the best sites to determine what your property may rent for?

There are multiple factors at play in determining your capital gains tax rate.

How do you figure out how much money you will pay in taxes at the end of the year on CF you made from your property. What is the percentage they use? I live in Illinois. 

Garrett Gunderson's/Wealth Factory has what's called the Cash Flow Index, it's helped us determine a credit card and loan payoff plan, and may be useful to help you determine your opportunity cost when it comes to paying down low interest debt or pursue an investment that may return a higher rate.