Learn platform-level shortcuts before app-specific ones — Ctrl+C/V/Z/S and Alt+Tab transfer across every tool in your stack

Why This Is a Rule

A platform-level shortcut (Ctrl+Z for undo) works in every application on your operating system — text editors, browsers, email, spreadsheets, design tools. Learning it once produces efficiency gains across every tool you use. An application-specific shortcut (Ctrl+Shift+L in VS Code to select all occurrences) works in exactly one tool. The platform-level shortcut has a multiplicative return: one learning investment × N tools = N efficiency gains. The app-specific shortcut has a singular return: one investment × 1 tool = 1 gain.

Prioritizing platform shortcuts first maximizes the return on your first hours of shortcut learning. The 10-15 most important platform shortcuts (copy, paste, undo, redo, save, find, switch window, switch tab, select all, close tab) probably save more total time than any 50 app-specific shortcuts because they're used in every application, multiple times per hour.

After platform shortcuts are automatic, then invest in app-specific shortcuts for your highest-frequency tools (Invest in mastery proportional to frequency × impact — months of practice for daily consequential tools, basic competence for infrequent ones). The learning sequence is: universal platform shortcuts → primary tool shortcuts → secondary tool shortcuts. Each tier has decreasing returns but increasing specificity.

When This Fires

• When beginning to learn keyboard shortcuts for efficiency
• When Monthly depth audit: find 10 unused capabilities, rate value, practice top 3 for a week — compound tool learning beats sporadic discovery's monthly depth audit includes shortcut learning
• When you notice reaching for the mouse for operations that have keyboard equivalents
• Complements Invest in mastery proportional to frequency × impact — months of practice for daily consequential tools, basic competence for infrequent ones (mastery investment scaling) with the specific sequencing for shortcut learning

Common Failure Mode

App-specific-first learning: memorizing 30 Obsidian shortcuts while still using the mouse for copy/paste/undo in every other application. The Obsidian shortcuts save time in one tool; the platform shortcuts would save more time across all tools.

The Protocol

(1) Master platform-level shortcuts first (these work across all applications): Essential: Ctrl+C/V/X (copy/paste/cut), Ctrl+Z/Y (undo/redo), Ctrl+S (save), Ctrl+A (select all), Ctrl+F (find). Navigation: Alt+Tab (switch window), Ctrl+Tab (switch tab), Ctrl+W (close tab), Ctrl+T (new tab). Text: Ctrl+Shift+Arrow (select word), Home/End (line start/end), Ctrl+Home/End (document start/end). (2) Practice until they're automatic — you shouldn't think about the shortcut, just do it. (3) Then learn shortcuts for your #1 tool by frequency × impact (Invest in mastery proportional to frequency × impact — months of practice for daily consequential tools, basic competence for infrequent ones). Focus on the 5-10 operations you perform most often. (4) Then your #2 tool, and so on. (5) Track: which mouse operations do you perform most frequently? These are the next shortcuts to learn.