- From Settings Panel (the icon at the bottom left corner) -> Options -> Community plugins, set 'safe mode' to off.
- In the 'Community plugins' section, click 'Browse' and find the obsidian-tracker plugin by the name 'Tracker'.
- Press the button 'Install' and wait for the completion of the install.
- In the section 'Installed plugins', find and enable the plugin just installed.
- Enjoy tracking.
Download the latest release. Extract and put the three files (main.js, manifest.json, styles.css) to folder '{{obsidian_vault}}/.obsidian/plugins/obsidian-tracker'.