For classic fiction, I'd recommend "It Can't Happen Here" by Sinclair Lewis.
For fantasy / scifi, I'd recommend "The Liveship Traders Trilogy" by Robin Hobb.
For self improvement, I'd recommend "Eat That Frog!: 21 Great Ways to Stop Procrastinating and Get More Done in Less Time" by Brian Tracy.
For a new technology to read up on, I'd suggest Microsoft Cosmos DB.
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho