If you're looking for a place to keep your files and access them from anywhere in the world then dropbox.com is the place you need to go. All you need to do is sign up for an account. It's free for basic storage and if you need more storage then you pay a fee. I use dropbox all the time because it is hassle free and I don't need to worry about carrying around a flash drive that I may lose. I also use it as a convenient way to back up my files. Basically you can use it for whatever your needs are. I personally put slideshows, video footage, pictures, and other important documents in my box. It has an RSS feed and you can share files with whomever you want.
So go install dropbox and start sharing. If you have any questions watch this youtube video: