I thought that WIPO was the most helpful because it was easy to navigate and understand. WIPO talks about intellectual property in its various forms and links to all of them to go into more detail. I had some trouble annotating my links but I was able to find this useful support page telling me how to do it. The Creative Commons movement is working to let us share and recycle knowledge. Doing this really helps everyone because we can help spread knowledge to each other. For most copyrighted items you will need the owners express written permission. According to The Missing Manual if you want to embed a video you will have less issues with older stuff because using an old bootleg Grateful Dead concert video is safer than using a recent SNL skit. But to have a YouTube video all you need is to copy and paste the link. I don’t think a tweet is copyrightable because in the terms and agreements (which, of course, we all read) it says, “By submitting, posting or displaying Content on or through the Services, you grant us a worldwide, non-exclusive, royalty-free license (with the right to sublicense) to use, copy, reproduce, process, adapt, modify, publish, transmit, display and distribute such Content in any and all media or distribution methods (now known or later developed). This license authorizes us to make your Content available to the rest of the world and to let others do the same.”. To me that indicates that it is not able to be copyrighted. I think for my blog I’ll be using the Attribution-ShareAlike 4.0 International. It seems to be the best option because people can use it as long as they give me credit and use the same license.