What do I need to do to move from the UK to USA?

Me and 2 of my friends have reached 18 and its been are dream for 3 years to move over to USA (Mississippi) we all have �5,000 each , and we were thinking of buying a small 3 bed over there we found some very cheap houses over there, and we would like to get there and start work straight away but what do we need to do to be able to migrate over there ? one of my friends was born in the USA and lived there for 5 years and me and my other friend are both born and raised in the UK