Pointers for possible move to the USA?

I know this a very broad question and one thats also been well worn, so apologies but any assistance and pointers would be greatly apprecited. I'm a single, never married 46 year old man with no kids (ergo no luggage) and I've got a bit disillusioned with life in the UK, so I look over the pond and think maybe life could be more rewarding and oportunities greater in USA. Is this relaistic or "Grass greener" I'm a professional engineer in the construction industry so the skills are transferable but I think the employment question is a different discussion. I suppose my question is, where ? And how much red tape would there be in the process ? I had wondered about renting somewhere for 6 months or so before buying, I'm cash posative so no lending or borrowing required. Big questions, big country....any starter advice ?? Thanks Karl