Ah geez. Well, try a little online lurking and focus more on first things first.
Your school will help you figure out what to start doing day 1 to prepare/explore specialty and career options, hopefully. Some schools suck at this.
SDN and I think AAMC have quizzes meant to help you identify strength/weakness/interests/motivations for trying to narrow down what fields you might fit you. Know that you don't know what specialty really fits you at this stage until you get more experience, so take those quizzes with a grain of salt. Take the Meyers-Brigg, take academic learning style quizzes. Hopefully the school you go to is good in career support. The recommendation is to revisit those quizzes as you gain more experience in medicine.
It's helpful to figure out early on if you want to be a cutter or not. If you want patient contact or not. Try to do some surgical and clinical shadowing and network as much as you can when you get to school.
The quizzes help you figure out how much emphasis on money, prestige, independence, etc you are into. In general, I suggest being really honest with yourself about what you really suck at, and keep in mind this is a *job* you'll do 50-120 hrs a week for the rest of your life most likely. Try to be more practical than idealistic. People I know who were more honest and practical than dream-chasers or people who didn't really know themselves, get enough exposure to various fields, or had rigid ideas about what kind of doctor they thought they should be or tell people at dinner parties, well, it seems to make the difference between miserable and not.
So I wouldn't worry too much about LORs just yet. You have plenty of work to do and doctors to get to know before you even know what letters you'll be needing.