Collect all grass clipping and yard trash but be certain to mix with the "brown" materials like leaves and shredded paper to add carbon. Do not compost meats or pet dropping. Stick with food scraps and yard waste.
Do-It-Yourself Food Scrap Digester/Composter. Properly composted food scraps can be turned into an excellent fertilizer for gardens. Learn how to put this easy system together. I have always wanted to try composting.