Newer Apple computers include the software and a way to get the video from a digital camera. On the PC you'll need a video capture card and the software. The Internet Filmmaker's FAQ has some articles on it, but there is a very wide variety of options available. The FAQ also has tips for editing, which is another skill that takes time to learn. Apple Computers There are way too many steps between editing and finishing the movie to cover them all.
Most Web sites cover a lot of information or provide places to go to look for more.
The Internet has done a lot to make this easier. Several Web sites are dedicated to allowing anyone to make their film available to the world. AtomFilms and iFilm are two of the main sites doing this. Submitting a film is as easy as filling out a form and mailing them a copy, and then anyone with an Internet connection can watch your film. They can also comment on it and rate it, which will hopefully be a good thing.