ZX81 BASIC Programming (Steven Vickers)
This book covers the following topics: Setting up the ZX81, The Sinclair ZX81 as a pocket calculator, Functions, Variables, Strings, Computer programming Statements: RUN, LIST, GOTO, CONT, INPUT, NEW, REM, PRINT, STOP in INPUT data BREAK, The character set, Looping, SLOW and FAST Statements, Subroutines, Tape storage, Graphics, The ZX81 Printer, Arrays and Organization of memory.
Author(s): Steven Vickers
NA Pages 
The contents include: What is a program,The BASIC primer, More Advanced BASIC, Card BASIC, Appendices.
Author(s): Dartmouth College
64 Pages
Introduction to Programming using QBasic
This is a gentle introduction to programming using the computer programming language QBasic. This introduction is used for a course in computer literacy for students of all majors. Its goal is to show what programming is about using the fundamental features of QBasic.
Author(s): NA
NA Pages
