So I've never really been the type of person to write down things (homework, etc.) in an agenda or calendar. I'd buy one, actually use it for a week or two, but then just completely stop using it. I feel like I might actually make an effort to use one if it was an application on my computer.
So my question is, what are your favourite applications to help you keep track of your life?

BTW, I have a PC.

google calender seems to be really good.

Yeah I recommend Google Calender. It is simple and easy.