Interested in more training

I am an LPN, and I know there are a lot of LPN jobs, but I am interested in getting more training so that I will be able to apply for the RN jobs since I like these positions better. I am wondering how hard it is to become an RN when you are already an LPN, and how long it will take. I really love being a nurse, and would like the increased opportunities that would be available to me as an RN. I just need to come up with the time and money to further my education, and then I will do it.