There are 3 ways to access to your channels.
1. You can switch through your channels over the content tab on the left side of your screen.
You will see all your channels and if you click on one channel you will be switched to it.
2. You can also access to them over the organisation: Go into your organisation and go to Channels:
As you see you will see a list with all you channels. You can access to them if you click on them.
Note: Only applicable for Org. Admins
3. You can access all your channels in one place simply by going to your profile which you can by clicking the "GO TO YOUR PROFILE" button available on the dashboard side navigation.
Hint: You can directly visit https://tchop.io/me page to access it