My sorcerer found a warlocks spell book.  Is there a way to be able to list those spells in it without activating them unless prepared?

Sorcerers can't use spellbooks.*

*barring multiclassing into wizard or warlock with a specific invocation, or the Ritual Caster feat.

Thanks!

No problem. If you want my recommendation, I'd sell it quick, because that book will turn to ash pretty soon (when the warlock who owned it either tries to create another one or dies).