Claude Code guide: start in VS Code, heed prompt injection warning

The guide positions VS Code as the on-ramp for people who have never touched a terminal, noting that the extension shows Claude's file changes side by side and lets users switch permission modes and models by clicking. For those who do use the terminal, it points to the native install scripts for macOS and Windows and explains the common "command not found" error as a PATH issue, fixed by adding ~/.local/bin to the shell profile. Alongside the setup steps, it stresses that anything given to the AI is sent to servers over the internet, so personal data, passwords and API keys, and confidential company material should stay out of chat. For workplace use, it suggests asking Claude for the method rather than the data — dummy records, column names only, or a script the user runs themselves — unless the organization has a Team or Enterprise plan that permits it. The plan comparison frames Free as a trial, Pro as the default, and Max as the upgrade once the five-hour limit is hit often, with Ultra for those who need more than Max.