I've worked on gathering some of the best how to guides for different tech tools that teachers are using for distance learning now. Remember just because you might be using these tools in the coming months for distance and virtual learning doesn't mean these are not amazing tools for blended and flipped classrooms for next school year. I hope you find these tools helpful.
As promised if I could find the teacher who created it I've shared their info here to give them credit. If not, I've posted where I found it.
Using Video for Online Instruction- these guides for Screencastify, Google Hangouts and Flipgrid were created by Meagan Alfano (@meaganalfano on Twitter), you can find all three guides here,
A great website to use for videos in the classroom that is currently extending their free trial through June 30th is BoClips, you can finish a curated lists of high quality instructional videos by grade level and standard. Check out more infomation about BoClips here and check out their user guides for high quality use of videos in your instruction.