How to buy Arkansas Tax sales

[Tate Price]

I am trying to find educational material, and information on tax sales in Arkansas. I have several main questions:

1. 1. Do I actually own the property?
2. 2. Can I make improvements to the property without losing the money I put in?
3. 3. How long before I can turn it into a rental?
4. 4. Can I sell the property with owner financing? 
5. 5. How do I know if the title is clear before buying?

Thanks for your help