My old Macbook Pro died and I had to buy a new one. So, I couldn't migrate anything from the old one. I lost all my bookmarks and other things. I had some great extensions for Firefox that I can't find anymore for YouTube. 1. Enhancer - I think that was the name. It gave me a lot of options when watching YouTube videos like closed captioning, the speed of the videos which I could slow down or speed up. Things like that. 2. A great Ad blocker. I had plenty of those on Safari but none as great as this one for YouTube on Firefox. I didn't have to watch one ad. I really don't remember the name of that one. Any help would be appreciated. These ad-ons made Firefox so much more enjoyable. Thanks for any help you can provide.