Evernote allows you to capture information and makes it accessible and searchable on the web from your desktop on your phone (iPhone ;-} ). Stuff you put into Evernote are your memories and are available to access wherever you are.
Never forget things, just capture everything now so you will be able to find it all later. Things you can capture are tasks and to-dos, notes and research, web pages, business cards (pictures of them OCR's), scribbles. photo's etc.