It can't be discounted that Apple's successful foray into the educational market resulted in schools countrywide brimming with Apple IIs, and social groups collecting around the labs after school hours. All manner of things happened there, some documented below.
These files range from explicit memory maps of the Apple II to long tutorials on how to "crack" games, that is, remove all copy protection and make the game easier to distribute between other pirates.
| Filename | Size | Description of the Textfile| ANATOMY | DIRECTORY | DOS 3.3 Anatomy | CRACKING | DIRECTORY | Files about Deprotecting Software or Adding Cheats | DOCUMENTATION | DIRECTORY | "Soft Dox" for Apple Programs | GENIELAMP | DIRECTORY | Archive of the Genielamp A2, the GEnie Apple II Roundtable | REVIEWS | DIRECTORY | Reviews of Apple II Software | WALKTHROUGHS | DIRECTORY | Walkthroughs of Apple II Specific Adventures | 6502.bugs.txt | 3064 | A Collection of 6502 Processor Bugs
| a2img.fmt | 2791 | USENET: Description of the 2img Disk Format
| acos.hst.mod | 6235 | How to get Speed out of your HST and HST Dual Standard Modem on an Apple IIGS
| aecomman.app | 1792 | A list of commands for Ascii Express
| aids | 1024 | Method for detecting the "Cyberaids Virus", by The Chemist
| alien.clues | 1448 | Passwords for Alien Mind, by The Undertaker and the Vandal
| alinto.txt | 12676 | An Introduction to Assembly Language Programming (on the Apple II) by Charles R. Smith
| anix | 7557 | SOFTDOCS: ANIX v2.2a by Randall Hyde (1987) (Operating System)
| ansi.spcs | 24911 | ANSI and VT100 Codes
| apple.app | 4157 | Combining Applesoft with Assembly Language
| apple.rx | 7694 | SOFTDOCS: Apple.Rx
| apple.txt | 4189 | The Text of the Apple-Microsoft Agreement
| apple2.gs | 9388 | The Sad, True Truth of the Apple II GS (Stands for Goddamned Slow)
| applecatf.txt | 3116 | Apple Cat Firmware Installation/Instructions
| appleii.jok | 1384 | The Unofficial Apple II Brainwash Test by Fred E. Long
| applemaf.txt | 22452 | The Apple Mafia Story, as Told to Red Ghost
| applemouse.txt | 9734 | Applemouse Programming, by Z-Man
| applenet.app | 4096 | Advertisement for Apple-net software. Note feature list
| apples.txt | 8230 | Why the Apple II is Broken
| appleser.app | 11205 | Apple //c Serial Port Information
| applesoft.tips | 2320 | The Beagle Brothers Applesoft Tips Guide
| appswitc.app | 2677 | Apple //e Soft Switch, Status, and other I/O locations
| assembler.txt | 5456 | The Best Apple's Assembly Tutorial Part 1: The Assembler by The Best Apple and Edited by Nowhere Man
| bin.ii | 18944 | Apple II Binary File Format, developed by Gary B. Little
| binaryii.txt | 18101 | The Binary II Protocol Information by Gary B. Little (November 24, 1986)
| binhex.txt | 2690 | Description of the .HQX File Format by Dave Johnson of Brown University Computer Science
| bitsbaud.txt | 11553 | Bits, Baud Rate, and BPS, by michael A. Banks, 1988
| bootl-6.hac | 102420 | Bootlegger Magazine Excerpts (Apple II Stuff)
| catfur.app | 7176 | Bit Blaster's Information on the Cat Fur Modem
| catstuff.app | 9818 | Expanding your Apple Cat // by the Warewolf
| centauri.alliance.txt | 4238 | Review of Centauri Alliance
| chameleon.txt | 27537 | SOFTDOCS: Chameleon by Dark Star Systems
| champ.lode.runner.txt | 3119 | Review of Championship Lode Runner
| change.file.txt | 20291 | SOFTDOCS: Change-A-File by Harold D. Portnoy
| command.set.txt | 2122 | A Quick Cheat Sheet of ProDOS Commands
| correct.app | 5716 | Corrections to programming for the Apple Cat
| cr.adder | 1441 | How to add Carriage Returns to Appleworks Databases
| crackdos.app | 15403 | Introduction to how AppleDOS operates
| cramit.app | 5062 | An Introduction to Program Compression
| cramit.txt | 7040 | Some Tips on Cramming Data with an Apple
| crammin.app | 5071 | A simple compression scheme
| davex.txt | 35022 | SOFTDOCS: Davex v1.23: A ProDOS Command Shell by David A. Lyons (April 12, 1988)
| deathlord.txt | 4008 | Review of The Deathlord
| diskgo.txt | 613 | Getting Faster Apple DOS Speeds by Tamerlane of the Ring
| diu.apwks.txt | 2569 | SOFTDOCS: Disk Inventory Utility v1.0B by The Saint (July 27, 1987)
| dos.chart | 1678 | The DOS 3.3 Memory Access Chart
| dosless.txt | 1792 | Creating an Apple DOS-Less Disk
| dsk.img | 6446 | USENET: A Method for Using a Mac to Make a .dsk Image File Back into a Real IIgs Disk
| dskimages | 8354 | USENET: Transferring Files from the PC or Mac to a GS
| ecp.facts.txt | 5634 | SOFTDOCS: Extended Command Processor Fact Sheet
| ecp8.txt | 8196 | SOFTDOCS: Extended Command Processor 8 by Don Elton (1987)
| emu.pt.update | 3739 | Message: Bugs in IIGS Proterm v1.9p
| errors.app | 4286 | A comment on error traps, by Nick Fotheringham
| errors.txt | 4480 | A Comment on Error Traps by Nick Fotheringham from the Apple Barrel
| executioner.txt | 4860 | SOFTDOCS: Executioner by Glen E. Bredon
| expandca.app | 9367 | Expanding your Apple Cat, by Warewolf
| fasteddie10b1.prsrls | 4650 | USENET: Press Release: Fast Eddie 1.0b1 Beta: Apple IIGS Emulation for the Power Macintosh
| fasteddie10b1.qna | 6059 | USENET: The Fast Eddie (possibly) Frequently Asked Questions
| fevsgus | 3505 | USENET: Review of the Fast Eddie Beta through the PowerMac AV Video Out
| fools.errand.txt | 2054 | Review of Fool's Errand
| format.nufx.txt | 47577 | The New Archive Standard for the Apple II -- "NuFX" -- NuFile eXchange by Andy Nicholas (February 3, 1989)
| freda.txt | 8106 | SOFTDOCS: Fredwriter Documentation by June Wedesweiler Dodge (November 30, 1985)
| fredb.txt | 10242 | SOFTDOCS: Fredwriter Documentation by June Wedesweiler Dodge (November 30, 1985)
| fredc.txt | 13625 | SOFTDOCS: Fredwriter Documentation by June Wedesweiler Dodge (November 30, 1985)
| fredd.txt | 8362 | SOFTDOCS: Fredwriter Documentation by June Wedesweiler Dodge (November 30, 1985)
| fredtips.txt | 9270 | SOFTDOCS: Fredwriter Documentation by June Wedesweiler Dodge (November 30, 1985) (Tips)
| futrae.app | 4684 | The Future Evolution of Ascii Express (Humor)
| gif.txt | 32977 | The Standard of the Graphics Interchange Format (June 15, 1987)
| gserror.txt | 4503 | A Collection of GE/OS Error Codes
| icon.convert | 3308 | Converting Apple IIGS Icons to Clip Art by Marty Knight
| iigsprob.hum | 2680 | The Apple IIgs Sound Problem
| joystick.app | 5961 | The Official Joystick Review Guide, by The Tracker
| kar.news | 7768 | How to Beat Karateka by ?Syntax Error
| kermit3.87.txt | 105150 | SOFTDOCS: Apple II Kermit User Guide Version 3.87 by Ted Medlin (October 10, 1990)
| kickmacr.app | 9981 | How to kick butt with AE Macro Action
| listserv.txt | 41317 | SOFTDOCS: Revised List Processor (LISTSERV@FRECP11), Release 1.5d by Eric Thomas (1986)
| mac2info.app | 11449 | Late-breaking (1987) information on The Macintosh II
| machinel.app | 15408 | Dr. Firmware's Tutorial of Machine Language
| memory.txt | 12020 | An Apple Peek Poke, Call List
| ml.part.i | 5680 | The Machine Language Tutorial Disk by Dr. Firmware
| ml.part.ii | 5370 | The Machine Language Tutorial Disk Part II by Dr. Firmware
| ml.part.iii | 5627 | The Machine Language Tutorial Disk Part III by Dr. Firmware
| ml.part.iv | 4970 | |