I’m very lucky that although I live in an urban area, I have trees that drop tons of leaves right outside my door.
If you’re not this lucky, you may have to go out hunting for leaves…they work better than any other material for balancing out your food scraps in the compost pile.
Plan B involves paper and cardboard- be sure to avoid allowing tape to get in the mix or you’ll be picking it out later.
He mentions pine pellets- I’ve never tried these and I have no clue where a feed store is, but I’m going to look. I’d suggest finding a wood shop instead and asking for their sawdust.
Piles that are sawdust intensive might not yield the best compost ever, but it will get the job done.