In Station, there are some very handy keyboard shortcuts to switch easily between apps & pages. The main ones are:
Ctrl + Tab → Quick Switch
Switch between the last used applications.
Cmd/Ctrl + T → Unified Search
Type the first letters of the app/page you're looking for.
The Unified Search is also deeply integrated with your most used web-apps (Google Drive, Slack, Notion, etc.). More info here
Cmd + Number
Switch between first, second, third, etc. app in the dock (from top to bottom).
Cmd/Ctrl + Alt + left/right
Switch from app to app, up and down across the dock.