Textbook:

Teach Yourself Visual Basic 6 in 21 Days, by Greg M. Perry, ISBN: 0672313103, Sams (1998) Paperback, 851 pages.

The main concepts are:

• Programming language (general principles) vs. development environment (a particular product)
• Data and variables
• Statements and control structure
• Functions and subroutines
• Modular structure
• Data structures and algorithms
• Applications

Topic list (page numbers refer to textbook):

• Visual Basic Interactive Development Environment (IDE) I
  • Introduction to the VB IDE 34-46
• Elements of VB programming
  • Event-driven programming 25-29
  • Forms 50-53
  • Controls 53-57, 57-60, 63-76
  • Events 77-80
  • Code 80-83, 117-118
• IDE II: Project Matters
  • Start new project: 34-35
  • Project Window: 38-39
  • Open Project: 47
  • Save Project: 53
  • Project Name (Project Properties): 116
• programming language I: variables, expressions, statements
  • Types 118-124
  • Declarations and variables 124-128
  • Statements: assignment 128-130
  • Operators and expressions, arithmetic: 130-132
• IDE III: Interpreting statements
  • Immediate (Debug) window 658-659
• Programming language II: control stucture
  • Operators and expressions, conditional and logical: 142-148
  • If-Then-Else 148-153
  • Case 153-156
• IDE IV: Executing programs
  • Debug.Print 658-659
  • Print 341-345
    (Print is a method; a method is a statement with a particular object as its target)
  • Break and single-step 654-658
  • Assert
• Programming language III: data structures and algorithms
  • For loops 160-163
  • Arrays 305-314
    (example: search)
  • Do loops 156-160
    (example: successive approximation)
• Programming language IV: functions and subroutines
  • Functions 168-179, 226-228, 230-231
  • Subroutines 216-226
    • Program structure 216-217
    • Global and local (scope) 219-223
    • Passing parameters 223-226
  • Functions again 226-229
    • Internal functions, math 230-232
• More IDE: Help
  • what functions are available? 43-45
• Programming language IV: modular structure
  • Program structure 216-217
  • Form modules and code modules 116, 218
  • Private and public 218-219
• Applications I: String processing and Text files
  • Declaring strings 128
  • String concatenation 131
  • String comparison 145
  • String functions 240-246
  • Format 254-258
  • Sequential files, Open, Close: 369-375
  • Sequential files, Read, Write: 375-382
    (example: copy, filter, line count)
• Applications II: Graphics
  • Shape control 431-435
  • PSet, Line, Circle methods 435-440
  • Print with coordinates 345-346
  • Animation with timers
• Other topics as time permits