BC547B, 2N3904, 2N2222 - You do not need it, all these are very similar, usually replacements2N3906, BC557 - the same. Buy one of these, except you want to experiment
- Definitely add few Shotky diodes.- Few headers (male and female, 40-pin)- Definitely few Zener diodes (3.6v, 5.1V, ...)- Few fixed (3.3, 5, 12V at least) and variable voltage regulators (LM317T or similar)- Few small heat sinks (perhaps)- Few FETsEtc. The best is to get few dozen projects you have in mind, got all you need and few spare components.
Which one would you recommend?
Question: What are Shotky and Zener diodes usually used for?
Shotky is a fast diode with very low reverse voltage.