The scrapbook is not an organized affair. It should contain all your research, but not in any special order. You must, however, label each element of your research with source information. The title and author of the article, the URL of the web page, etc. should be included after each entry in your scrapbook. More later on about the specifics of identifying sources.
Online research requires a special process.
First you have to find what you re looking for. This entails using a search engine. A search engine looks for the words you enter in the search and finds the pages where these words appear in its database of web pages. Searching the Net is both an art and a science. You want your search to return what you re looking for without returning thousands of web pages that are not relevant.