Adafruit Guide To Excellent Soldering
Author: Bill Earl
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How To Solder Beginners Guide
Author: Makerspaces
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Soldering Techniques (UNC-CH Department of Chemistry)
Author: Collin J. McKinney
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How to Solder Electronics - 15 Rules for Successful Soldering
Author: SRA
Register to Get a Free Copy
The Basic Soldering Guide (includes some useful links, but some are corrupted)
Author: Judith Cardell
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“SOLDERING IS EASY” COMPLETE COMIC BOOK!
Author: Mitch Altman, Andie Nordgren, Jeff Keyzer
English Verions
The book is available in other languages about 24 languages: Webpage
Basic Soldering Lessons 1 - 9 (OLD, but GOLD)
Author: PACE
English Verions
Available in: French, Spanish, Swedish
Beginner's Guide to Soldering Electronics
Author: Branchus Creations
Part 1, Part 2
Soldering Electronics Learning Modules
Author: UNSW Making
Webpage
7.1.1 Soldering Basics
Author: Circuit Technology Center
Webpage (Look at Section 7)