These are some of the programs I wrote around the turn of the 90's. Needless to say, they're pretty poor. I never actually used the guitar tuning program to tune my guitar, if you try it you'll see why. Likewise, I never used the name, address and 'phone number program, or the word counting program. However, I hope that they'll serve to illustrate some of GFA BASIC's features. I recommend that you read through the GFA BASIC Tour first.
You can download these programs and try them if you're desperate. The disk also contains a number of other programs, some unfinished.