What is the main verb of this sentence?

My pocket book collection can be read anytime during travel.

He gifted me a signed copy of his new book.

They are always lovey-dovey, and I'm very envious.

They are always being affectionate.

The legend of Beelzebub has been handed down from ancient times.

Gyōbu was a part of the ancient Japanese government system.

He knows the knack of cooking.

He gathered the wood chips and started a fire.

He set off on a journey to the north.