YouTube is linked to your Google Account, so if you have an account with Google, this process is fairly easy. A detailed video can be found here
Create a new playlist and add helpful videos to this playlist. YOU DO NOT HAVE TO MAKE YOUR OWN VIDEOS. Simply search for videos that you like and click the three circles in the upper right that appear when you hover over the video. Select the playlist you created. It has now been added to your playlist. Repeat until you are happy with the full list. Once I started finding video producers I liked, this process was fairly easy and took 5 minutes per assignment at most.
Find the link to your playlist on your channel and make a QR for the link. You can copy the link to a generic QR code generator and download the image like the one found here. Personally, I use the Google url shortener extension that I now have built into my Chrome browser. Download the QR code to place on homework assignments.
You can copy and paste it electronically, or if you want to go low-tech - you can always print the QR code and literally paste it to your worksheet. Students who are stuck on the homework assignment can scan the code with their phone and view an entire YouTube playlist that can help them solve the problems.