If you are looking to increase your sales skills you have plenty of choices. I have added content to my YOuTube channel. Facebook Page as well as Facebook group.
Here is the link to the Youtube Channel – https://www.youtube.com/channel/UCRmPv4sdRiPqyWXqPDVWNKg
If you want the Facebook Page it is right here:
https://www.facebook.com/profile.php?id=100088930908144
If you want the facebook group it is right here: