Guild Wars 2

I have a few tomes of knowledge I haven’t used yet. I don’t know why….Anyways, with the currency change, will they still be usable up to level 79? Or do they become something else? And when would I need to use them by?

First bullet point at the bottom of the blog:
“Tomes of knowledge will level you up if you are under level 80 and give one spirit shard if you’ve reached level 80.”

From https://www.guildwars2.com/en/news/updating-your-wallet/
“Tomes of knowledge will level you up if you are under level 80 and give one spirit shard if you’ve reached level 80.”

EDIT: Ninja’ed by Donari

Short answer: Keep.

Tomes of Knowledge are mostly unchanged with the upcoming shift. Their best use will be for alt leveling, though they will still give Spirit Shards.

Tomes of knowledge will level you up if you are under level 80 and give one spirit shard if you’ve reached level 80.

https://www.guildwars2.com/en/news/updating-your-wallet/

I’m just curious if they’ll give any progress towards masteries in addition to giving a spirit shard.

khani.4786:

I’m just curious if they’ll give any progress towards masteries in addition to giving a spirit shard.

They wont.

khani.4786:

I’m just curious if they’ll give any progress towards masteries in addition to giving a spirit shard.

They won’t. Tomes, writs, exp boosters, or food that gives exp on kill will not advance Masteries.

http://www.zam.com/story.html?story=35818&storypage=2
The masteries seen in the demo are just the tip of what masteries will be available at launch, and the team will have more surprises for players. We wanted to know if all those consumables, like Tomes of Knowledge and Writs of Experience, would help players unlock all of these masteries faster. The short answer is that they won’t. The experience bar is going away and is being replaced by the mastery training bar. This training bar is in no way tied to experience, but fills up by going out and doing stuff in the world. So any item that gives you experience won’t help you train masteries.