Both of the other solutions posted are incorrect, and I tested this with an alt account.
To get this achievement, just access 5 of the channels provided.
- Friends
- Featured
- Most Recent
- Most Popular
- My Channel (Doesn't count as a channel itself. Each of the 3 below count as separate channels)
- My Channel
- My Favorites
- Following
You need to have a video in each channel for it to count. Since I have no friends that own this game, Friends didn't count for me. I also had no videos under My Channel, but I had favorited one video, and followed one video, so I used My Favorites and Following for my 4th and 5th Channel.
Once you visit the 5th channel, the achievement will unlock. You do not need to view any of the videos, other than to favorite and follow the one video (can be the same) to populate two channels if needed.
Hope this clarifies things. Let me know if it doesn't.