You won’t get very far as a webmaster if you don’t know what a plaintext editor is (Notepad, for example), so I’m not going to waste time explaining. Let’s fast-forward to the good part.
Are you happy with your text editor? Which one do you use? Do you want to try some new ones?
I use Notepad (included with Windows), and EvolvEd (which is no longer available, unfortunately). I mainly use Notepad, but I use EvolvEd if I need line numbers, syntax coloring, or other extra stuff. Notepad is still my favorite text editor (I like It’s simplicity), though I’ve always wanted to try the Mac-only (I want a Mac!!) TextWrangler.
If you want to look around at more advanced text editors than Notepad, check out Wikipedia’s page on text editors.