| Harold's Cheat Sheets | ||
| Computer Science | Computer languages and science | |
| Harold's AI Chatbots List | Docx | Lists the strengths of the top AI Chatbots as of Q1 2025 |
| Harold's Microsoft 365 Copilot Applications List | Docx | Lists all Microsoft 365 Copilot applications (Microsoft Office Suite) as of Q1 2025 |
| BarCharts QuickStudy Guide | ||
| Computer Technology | ||
| Computer Terminology | ||
| Computer Shortcuts | ||
| SQL Programming | ||
| LINUX | ||
| UNIX | ||
| IM Abbreviations, Texting & Emoticons + Slang | ||
| Khan Academy | ||
| Computers and the Internet | 5 Units of practice problems | |
| AI | 4 Units of practice problems | |
| Textbooks | ||
| OpenStax Computer ScienceTextbooks | Free physics textbooks for HS Physics, AP Physics, College Physics, and University Physics vol. 1-3 |
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Last updated 2 January 2026