Assorted small stops in between the Darks

Hint: How do I stop the dog from eating the space fleet?

Hint: How do I escape from my own brain?

Hint: How do I avoid smashing on the rocks on Damogran?

Hint: How can I get past the guards on the planet of Damogran?

Hint: How can I defeat this ravenous Bugblatter Beast of Traal?

Hint: How do you avoid the hostess at the party?

Hint: How can I get Arthur off the Earth, (as Ford Prefect this time)?