Reddit mentions of Transistor Circuit Techniques: Discrete and Integrated (Tutorial Guides in Electronic Engineering)

In the light of all the praise here, I have to be critical of it. It's an awesome book, from which I learned a lot but it's completely obsolete at every level. There are better solutions to many problems that didn't come into existence until after it was published. For example Bob Widlar's work on current sources and the distinct improvements in devices that destroyed the specialist transistor market across the board etc.

If you want better books that are practical I can recommend:

1. https://www.amazon.com/dp/0748740759/ - This is simply the best book on the subject ever written. I have learned so much from this over the years. Published in 2003 so nice and up to date (not much has changed since then apart from RF MOSFETs and obsolescence).
   
2. The good old Art of Electronics. Don't bother with the 3rd edition. 2nd is fine. Not much has changed since 1989 as well :)
   
   Also, please note that nearly ALL functions required can be trivially replaced with opamps, dedicated ICs, discrete logic or microcontrollers these days and almost 100% definitely should be if you're working in a commercial environment. The stability, lack of spread across devices, FET input stages and integration should never be ignored.
   
   For personal interest I love building things with just discrete BJTs though and will continue to do so until I'm dead. Last week I built a discrete log converter that worked. This week I'm trying to build a temperature compensated zener reference. I am always amazed at how much fun you can have with a bag of 2n3904's and a couple of CA3096 transistor arrays.
   
   PDFs are available for the above books from Library Genesis if you can't afford or can't obtain the texts. Please do buy it though for the authors' sake.