Here is how I do it...1st of all, I have a MAC computer at my school hooked up to an activ board. That means that my computer desktop is essentially a large part of my class decor. I keep my desktop clean of all files except for what I need for instruction that week.
I also keep all my files on a jump drive. Being a new teacher, I've unfortunately shifted around a lot in the last 3 years. Having everything set up on my jump drive makes changing schools and computers very easy.
So here's how its set up.
The dated folders contain anything that has my student's names on it, and also sub plans for that year. Basically anything that is made for a specific class or day during that year.
There are a lot of folders from my intern year (i.e. portfolio items, behavoir management, and articles).The 2 most important are the lesson plans folder and the newsletter folder.