If a character wanted to start a campaign with a grimoire, what would the CP cost be?

I'm asking because I have a character that can learn magic, but starts with no spells and the chart of Magic Learning says I need a spell to learn a spell.

Is there another way to learn the first spell without the GM adding an NPC to help me along?

Could use a single CP or 3 CP, up to your GM to decide on how many spells would be in the book and at what level. Obviously the more CP used should mean its that much better. No official thing in the book to use a CP for this but no reason it couldn't be say an Artifact. Just work with your GM.