Mug's Code Forge
Practice Lab
Three short games. Tap, get instant feedback, and watch your best score climb. No prior experience needed — these are designed for absolute beginners.
Read a plain-English description. Tap the matching tag or keyword.
A short snippet of code has one broken line. Tap the line that's wrong.
Look at the snippet. Guess what console.log will print.
Video Library
Tap Play here on any card to embed the video right inside the app — no leaving the page. The channel list at the bottom is the best places to subscribe.
If you like a teacher's voice, subscribe — these channels make hours of free content.
Plain-English Dictionary
Every coding word, explained as if you've never heard it before. Type to filter.
Practical Tools
Original Claude tools kept here: the mini BPR calculator and software plan builder. The new expanded practical modules are in the Workshop tab.
Practice formulas with real business-app thinking. Change the numbers and calculate.
Formula: GP$ × Branch GP% × 0.055 × adjustment
Fill this out before asking AI to build or edit a company tool.
Expanded Workshop
These modules are built on top of Claude’s app. They teach the exact skills you need for company workflow apps: data shape, button flow, saved state, imports, tests, release notes, GitHub habits, and debugging AI polish.
Define the exact shape of the information before AI writes code. This helps prevent broken imports, saves, and reports.
When a button stops working, trace the whole chain instead of guessing.
See what this app has saved in your browser. This teaches how local web apps remember progress and settings.
Select a key to view its saved value.
Paste CSV-style employee rows, parse them into records, then export JSON. This demonstrates import → review → save.
Practice spotting the kind of backend break that happens when an AI “just polishes the UI.”
Build a repeatable release checklist before uploading a company tool.
Keep ZIP name, visible app version, README, and release notes matched.
Use this before pushing or uploading a build.
Generate a safer prompt before asking AI to change an app. It forces AI to preserve backend rules.