Thank you, this information is very helpful
So it would be easier if I married a UK national? That's basically why I want to move, but would it be easier to marry them first? Wow, I didnt know it would be so difficult. If i choose to marry approximately how long would it take to receive a visa?
It's easier in that you don't have to go through the long process of obtaining work permits etc., but at the same time, it's not something that you should just 'do' so that you can live in the UK. It's also expensive - over $1000 for a fiance or marriage visa. You can enter the UK on a fiance visa, but you have to marry within 6 months and then pay another $1000 for the marriage visa or you can marry in the US and then enter the UK on a marriage visa. Plus, the visa applications require a lot of preparation and paperwork (prove of relationship, budgets, bank statements etc.) and can be refused if not properly put together with all the correct information.
However, I will say that it is probably not advisable to try to marry someone just to be able to move to the UK - the immigration officers can tell when the relationship is not genuine and can refuse to issue a visa if they don't believe you qualify.
What I would suggest is to maybe find another way to spend some time in the UK (student visa, BUNAC, maybe even just go for a short vacation to the UK to get a feel for the place etc.), see if you like living there and if you meet someone special, then maybe in the future you could get married. After all, you're still young - you have your whole future ahead of you to make this happen, so why not take the time to really research your options and if you're really serious about moving, find out what you need to do to make it a realistic possibility - maybe enroll in college in the US, take some classes, do a study abroad year in the UK during your time at college etc.?
Also, I would definitely advise visiting the UK first (if you haven't already) before you decide to move - after all, what happens if you hate it when you get there? My decision to move to the US this year was based on 6 months' worth of vacations to the US over a 12 year period (staying with relatives in the Deep South, so I got an idea of living in the US as opposed to just staying in a hotel and being a tourist) and 10 months of living here on a exchange student visa in 2003 - and I still spent the first couple of months feeling homesick and wanting to go home!