I just went to this link
http://www.yulelog.com/hallmarkhelp/index.htmlto see if it was a step by step guide on how to use the Yulelog program. It's what I thought it would be and an excellent place for you to start. I hope that's good news to you.
Now for what may be bad news for you. I didn't find any sound on it. It's the same as if you had a booklet that came with your disk (I don't believe there is one and there isn't one you can download). You just have to go through this and follow along.
At one time Sean had a Youtube video for how to install the program, and maybe that's what you were looking at. I never looked at it since I can usually read and follow instructions. But again, that's just how to install the program and not how to use it.
If you have a problem adding items to your collection, please review the installation instructions. If you don't install it correctly you can't add items. I forgot to do one thing and had this problem so that's how I know about it.
If you get stuck, send me a PM through this board and I'll try to help you.
Good luck!