Welding Fundamentals
You will find that Exam Books textbooks are a solid choice for self-study.
Welding Fundamentals
It provides all of the information needed to help students develop proficiency with the most common welding processes (including SMAW, GMAW, FCAW, GTAW, and oxyfuel welding), thermal cutting, welding symbols and basic print reading, and joint design and fit up.
Modern Welding
The 6th edition includes more interactive elements for active learning.