I used to print and file in a binder, but that became unmanageable because there is so much information out there! Now I store everything in Gmail using their labels. I have a label for vaccination and I archive everything there. If I read something on-line, I email myself the web link and usually even copy and paste the article right into the email body b/c then I can highlight the most important items. Same with forum posts, e-newsletters, research studies, etc. I make the subject line as descriptive as possible so later on I can find what I need easier. On the rare occasion that I'm reading something in a paper and don't an electronic version, I scan it and email it to myself. I also have sevaral books, but most of my info is in electronic format and I find Gmail really useful for storage.