Need assistance in understanding the investment process from one state to another

[Ramatu Kuyateh]

My husband and I currently own a townhome in Maryland for about 3 years now.  We are now looking to move to Orlando Florida.  We are thinking of purchasing a new home or townhome in Florida and renting out our current home in Maryland.  I'm very new to this so please forgive the elementary questions.  1.  For the FL properties, I have read that for a second property there would need to be 20% down payment.  Would that be true if we made the new property in FL our primary?  If not true, what would be the rate percentage for down payments?  Would that affect the loan of our current property in MD?  What are some things I would need to look out for when moving from one state to another?  Also, what are some gotcha's when buying property in Orlando?  Thank you in advance for all your wisdom. :)