These are some well regarded books specifically about QBasic 1.1.
Qbasic By Example, Special Edition
by Greg M. Perry, Que Publishing
Qbasic Programming for Dummies
by Hergert, Douglas
Q Basic
by Steven L. Mandell; Susan K. Baumann
Running Ms-Dos Qbasic
by Michael Halvorson
Using Quickbasic/Includes Version 4
by Don Inman, Bob Albrecht
- Lots of information about many topics, including magazines, but you have to sift through things that aren't applicable to QBasic 1.1.
Gary Beene’s Information Center
- Explains the differences between QBasic and the original QuickBasic.
- Has tutorials about lesser discussed, yet important topics.
- Written by Ted Felix.
- Excellent guide to various topics, especially his sprite tutorial.
- Written by Balau.
- Shows how to load sprite data from a file, as well as the general info one needs to reach that point.
- Useful downloads and information about running QBasic on modern hardware.
- Provides full copies of QBasic 1.1, Quick Basic 4.5 and Quick Basic 7.
- Technoloy University
- Some complex math and other useful examples.
- Fairly thorough guide of the standard functionality.
- Note: It randomly throws in comments like, "this only works in QB64!!!", so QBasic 1.1 users have to pay close attention when reading.