First things first: this book, as the other two books in the series, are about electochemistry, not analytical electrochemistry. That is, in this volume in particular, the fundamental aspects of electrode reactions (that is heterogeneous electron transfer) are covered.
This is not a book on electroanalytical techniques.
The aspects regarding the motion of ions and molecules in solution (diffusion, migration...) are not covered (they are thoroughly explained in the first volume: Modern electrochemistry 1: Ionics) and are frequently referenced to, so i'd suggest you get some understanding of how they work before you venture into this book.
Now let's get to volume 2A: i love this book. It is written in an extremely clear and concise style. The authors are very careful always to present the phenomena they're describing both with an inutive and with a more mathematical approach, while never losing touch with the physics behind them.
The topics covered range from double-layer structure, to electrodics (kinetics including multi-step reactions, transpost phenomena, crystal structure influence on kinetics) and an introduction to quantum electrodics.
At the end of each chapter is also a very useful list of papers that dig deeper into the topics presented. Basicly everything one can wish to find in a textbook.
I cannot but encourage one to get all of the 3 books in the series (paperback, the hardcovers have a rather silly price...).