The High Growth Handbook by Elad Gil: interviews with successful entrepreneurs. It made me think a lot about strategy on the long term. Very informative.
Crossing the Chasm by Geoffrey Moore: Marketing book. Very informative about how Tech products can actually address a whole market and not screw up in the middle of something....product and Marketing oriented.
Hooked by Nir Eyal: Very interesting book about how to “manipulate” users and create habits so that they can be “hooked” to your product.
Those 3 books can be read at the same time. Quite easy and fast to read.
Hope it helps.
P