J Visa

After a long-term relationship, earlier this year I married a U.S. citizen. I do not want to change my immigration status and do not wish to immigrate nor reside permanently in the United States since we both have steady jobs outside the U.S. and I do not want to leave my country. All I want is to be able to travel temporarily into the U.S. for pleasure and leisure as most tourists do, once or twice a year for a couple of weeks each time.

I want to know if I can just apply for a new B-1/B-2 tourist visa to travel into the U.S. or if my husband needs to file an I-130 petition for alien relative and I-129 and K visa thereafter instead –which I understand would be the right process if I ever wanted to adjust status or become a U.S. permanent resident.

If someone came to the US on a J1 visa with a residency requirement of two years and that person returns back to the home country and then would like to return to the US on an F1 visa to continue a master's degree, can a visa be issued before the residency requirement is completed and does the new F1 visa if given, get rid of the J1 residency requirement?