This book is a bit old-school, and is outdated in places, but it is what a lot of people started with, and the advice within is still good.
Customizing an amp can be significantly riskier than working on pedals. If you are wanting to start experimenting with mod’ing and building tube amps, it would be worth your time [ … ]
For those of you who have gotten into analog synthesis by way of the vast world of guitar pedals, this book will serve as a useful introduction to building your [ … ]
This one is for those who are wanting to venture beyond the realm of pedals, and into the broader field of electronics and circuit building. Good for the beginner.