Recycle them. It’s a bound collection of cellulose (and some ink); cellulose can be upcycled into other paper products. Like insulation, attic blow-in, boxes, etc.

Trashing it is trashing a resource, which sounds worse than it is in reality. It’ll rot & decompose nicely in a landfill.

Burning books…SUCKS…take it from me like it takes FOREVER and it burns page by page, you have to stir it constantly.

Finding a recycling center is so much better for the world, and easier for you. Win-win.