If you want to learn basics of Integrated electronics devices and circuits - I personally recommend 'Electronic Devices and circuits / Integrated Electronics by J. Millman and C. Halkias (This is actually a textbook)

In case you want to learn Engineering Electromagnetics, great textbook by William Hayt and John Buck

Haven't yet read any other awesome basic textbook on 'Computer Networks' like the one by Andrew S. Tanenbaum

'Digital Signal Processing' by Oppenheim and Schafer

Although these are not textbooks but among other good reads are 'Crossing the Chasm' by Geoffrey Moore, 'The Innovators Dilema' by C. M. Christensen, give amazing insights.