- 👋 New to #OpenStax or want a refresher? Join a webinar to learn how to: ✅ Access our free digital textbooks ✅ Access no-cost instructor resources ✅ Start using Assignable, our custom assignment builder 📅 Tomorrow at 9 a.m. CST 🔗 event.on24.com/wcc/r/5164132/F273A…Feb 4, 2026 18:15