I have the following problem:

As we receive tons of information every day, among these there are a lot of websites/books/articles which could be useful as reference material for some future project or even to improve ongoing projects.

But it seems too much input to file it all - even writing the basic information like title, source etc.

Is there any help on the criteria which to store and which to dump?
(I always fear loosing something that could be helpful some day)