Using images from the web search is okay if the images are being used for an educational purpose. Remember - you must cite your image! This document will explain how.
Consider using the notecard feature in NoodleTools to keep track of your information. Once in your project, find the Notecards feature on the left (cite sources first!).
A lot of databases will move the citation directly into your NoodleTools project. Just look for the export option under the cite tool - these instructions will help!
Have you finished? Are your sources and annotations completed? Then NoodleTools can take them all and move them into a Google Doc for you - follow these directions!