The Four Types of Compost
https://www.youtube.com/watch?v=OpZChqz9iiI
Speed Up The Composting Process With Coffee Grounds
https://www.youtube.com/watch?v=vgdeu39N_Pw Carbon to nitrogen imbalances... MIGardener weighs in. 3 parts carbon to 5 parts nitrogen...
#1 Reason Why Your Compost is Not Composting
https://www.youtube.com/watch?v=1FZznkQXZzE Yep, if your compost is a pile of sludge (which is likely if you're using a compost tumbler), just add more brown materials. That's it!