These videos are updated for the 11th edition of the “ARRL Extra Class License Manual for Ham Radio.” You can find this book on Amazon by clicking here, and on the ARRL website by clicking here. The errata page and the question set re-ordered to match the book can be found at http://www.arrl.org/extra-class-license-manual. You can go directly to the exam review website at http://arrlexamreview.appspot.com/.
You can find a complete list of the Amateur Extra videos by clicking here, or click here to go to the YouTube Amateur Extra playlist. Please post your questions either below or on the YouTube page for this video. Good luck in your studies!