A nice touch in this textbook is the color-coded sections for different topics.
Viking Language 2: The Old Norse Reader (Paperback or Softback)
A nice touch in this textbook is the conversion chart for units of measurement.
Excel Tips and Tricks (Paperback or Softback)
This textbook is the one I kept after the course ended for reference.
TCP Congestion Control: A Systems Approach (Paperback or Softback)
This textbook is well organized, with each chapter building on the last one.
Healthy Treasures Cookbook Second Edition (Paperback or Softback)
What stands out about this textbook is the highlighted key terms throughout.

