Designed to improve students' thinking, learning, and creative skills while they learn to program a microcomputer in BASIC programing language, this instructional manual for intermediate learners provides a brief section of information for each new topic together with a sample program to enter, run on the computer, and observe; a suggested change to clarify the principle being taught, and a challenge requiring use of the new principles. Each chapter includes a review. Individual chapters describe the subroutine commands GOSUB, RETURN, ON-GOTO, and ON-GOSUB; tabulating with the commands PRINT TAB(X), HTAB(X), and VTAB(X); SOUND, DIM(X), and CLEAR; and READ, DATA, RESTORE, TRACE, and NO TRACE. A reference chart displays commands and their functions. Separate color coded project books for elementary, junior high, and high school/adult students are available for this manual. (Author/LMM)