Please stop wondering and browse to a site that can provide a quick primer. You will quickly find that Our Founding Fathers were libertarians.
This small book is free in .pdf format: Libertarianism In One Lesson by David Bergland. I sat next to David Bergland, the 1984 LP Presidential candidate, at a dinner several years ago. There is an updated version of the book for sale at "Advocates for Self-Government."
I am not a Libertarian Party member and do not agree with some of their positions, such as open borders or unilateral withdrawal of all overseas military presence, but I do agree with many other libertarian positions that are based on reason and common sense.
Much to it's credit I have noted that in the years since 9/11 they have modified the open borders position and in spite of this belief they state "we support control over the entry into our country of foreign nationals who pose a credible threat to security, health or property."
The saddest tactic of all that libertarians use against America, is that the right wing social conservatives who created America and had their representatives writing up the paper work, were creating a land of homosexuals in the military and abortion, and polygamy, and everything else.
It just took the left and libertarians to discover all that in the 1960s and start making it all part of our culture.