#2
Sure. There are two main options:
*Text tab: Write it out in text form, on a template like this.
*Guitar Pro tab: Write it out in Guitar Pro or TuxGuitar; the first is $60, the latter is free. This is easier, I think, and lets you play back the tab to see how it'll sound, but anyone reading it will need one of the two to open it. (It can be printed out, too.)