The Rebus Community is a great place to start. It connects you with people that have been where you are now with your OER project. Also, there are free builders on LibreTexts.org, OERCommons.org. and MERLOT.org that help you make or adapt OER that's browser-ready for any device. Each of these videos is about 5 minutes or less.
Grayson Anderson
grayson.anderson@angelo.edu
Christina van Ittersum
christina.vanittersum@angelo.edu
Mr. Jason Brown, M.E.T.
jason.brown@angelo.edu