# Chapter 401 - Lightning: What does it solve?

- [401.1 Lesson - bitcoinDrawbacks](/chapter-401-lightning-network/401.01-lesson-bitcoin-drawbacks.md)
- [401.2 Lesson - blocksizeWars](/chapter-401-lightning-network/401.02-lesson-block-size-wars.md)
- [401.3 Lesson - lightningNetwork](/chapter-401-lightning-network/401.03-lesson-lightning-network.md)
- [401.4 Lesson - instantPayments](/chapter-401-lightning-network/401.04-lesson-instant-payments.md)
- [401.5 Lesson - micropayments](/chapter-401-lightning-network/401.05-lesson-micro-payments.md)
- [401.6 Lesson - scalability](/chapter-401-lightning-network/401.06-lesson-scalability.md)
- [401.7 Lesson - paymentChannels](/chapter-401-lightning-network/401.07-lesson-payment-channels.md)
- [401.8 Lesson - routing](/chapter-401-lightning-network/401.08-lesson-routing.md)