You can very easily join community servers by either pressing shift+tab while in game and clicking the "Game Servers" button (highlighted in red) or by pressing "view" in the Steam client and clicking "Game Servers" in the dropdown.
You can very easily join community servers by either pressing shift+tab while in game and clicking the "Game Servers" button (highlighted in red) or by pressing "view" in the Steam client and clicking "Game Servers" in the dropdown.