How would I setup and configure etherchannel from switch0 to all the other switches? Switch0 has been configured as the root bridge, Router0 has been configured to be the gateway for each Vlan and as a dhcp server, and all the switches are properly connected (as access and trunk interfaces)
Since all "education, certification, or homework" questions are off-topic here, we will not give you the answer (and you don't include enough information for that, anyway), but below is enough information for you to figure out the answer for yourself.
On the distribution switch (Switch0), you need to create port channel interfaces to each access switch:
interface Portchannel<channel number>
Then place all the interface configurations in common for that channel to an access switch under the channel interface. After that, you add the physical interfaces to an access switch to the channel under the physical interface configuration. It depends on the particular channel protocol you want to use.
channel-group <channel number> mode on
channel-group <channel number> mode desirable
channel-group <channel number> mode active
You then do the same thing on the access switches for the interfaces back to the distribution switch.
The distribution switch will have one channel interface for each access switch, and each access switch will have one channel interface back to the distribution switch.