Lab3: Total disaster

So, I got to Lab3 and it turns out to be total disaster.
Wrong versions described in book, even when for months it is known that certain versions of Fabric are incompatible with new CouchDB.
Downloaded all cointainers with startup.sh again with newest versions of Fabric.
After upgrade it turns out that when I copied parts of docker-compose.yml it had some junkie characters, so issues with connecting to CouchDB (wrong user name and password). Had to retype number o lines.
Now, for whtever reason, genesis.block went off (I guess as a result of startup.sh) and can't recreate it.
I got: ' [common.tools.configtxgen] main -> FATA 001 Missing channelID, please specify it with '-channelID''

Is this really so hard to fix documentation? With labs 90% time goes to troubleshoot shitty written commands and mistakes in labs instead of focusing on Fabric.
This is so junkie that should be given out for free, not as paid course. If that would be in person classroom, I would walkaway and request refund, that's how bad it is. Whoever wrote script for that courseware should not be allowed to touch computer ever again.

How can I proceed now, if I try to re-create everything and it fails with another junkie message ' [common.tools.configtxgen] main -> FATA 001 Missing channelID, please specify it with '-channelID''???