We’ll use Portal 2’s Puzzle Creator to design our own levels that we can share with our fellow game developers and gamers around the world!
Step 1: Press 'Community Test Chambers'
Step 2: Press 'Play Single Player Chambers'
Step 3: ‘Browse the Workshop'
Step 4: Press 'Friends Items'
Step 5: Press '+' on chambers you want to play
Step 6: Press 'Shift' + 'Tab' to go back to 'Single Player Chambers' menu
Step 7: Select map and press 'Play'
Step 8: If you complete the map rate it
Step 9: Press 'Exit to queue' and play the next one