Are women controlled by men in the community.
Aren't we all? `To some extent yes, there are also female community leaders however.
Are girls allow to pursue education or career?
Yes although this might be limited. I don't know any Religious Jewish ballet dancers for example. Some people prefer not to go to a secular or non Jewish college so they might do an online degree or go to a religious college such as Touro in New York. Some people see it as preferable to stay within a religious framework so they will prefer to get jobs within the community - eg, schools, yeshivot, in outreach roles.
Are they encouraged to marry young?
Yes.
Are you allowed to have a boyfriend or girlfriend.
See my skirt answer. :)
Dating is for marriage so if you have a boy friend or girlfriend it would be expected to be a non physical relationship and with the end goal of marriage.
Some young people do find their own partners eg they meet at a social event or shabbat meal.
What happens if you are gay?
Some gay people leave the community, others prefer to stay in it. There are gay Orthodox Jews, I don't know too many of them so can't really speak for them altough I have definitely met some. Maybe someone in a bigger Jewish community than mine can answer this question. :)
Its possibly the case that gay people suppress that side of themselves to conform.