Family Tree Magazine has a YouTube channel and they recently published a video which is a quick tour of the Ancestry owned website: Fold3. Fold3 is a website that focuses on military records but also has many other collections.
The video was put together by Sunny Morton. A friend of Niagara County Genealogical Society as she was our special guest speaker a few years ago. You can learn more about Sunny at her website: https://www.sunnymorton.com