This is not a direct "resource" for Overwatch. The people in this video will not give you any tips and tricks, nor will they guide you through any maps. Instead, this video explores the way sound is used as a whole in Overwatch. Again, while not an actual guide or resource -- this video is invaluable for understanding the sound design and techniques used in Overwatch.
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Want to hear about new resources? Suggest changes or updates? Berate me for writing or adding garbage? Come hang out in my Discord. It consists of a channel where I only post updates for this resource thing. It may eventually contain further channels. I don't really know how to work this thing oh god help I need an adult. "This thing" being social interaction, not Discord.