ANSWER:

"research guy in Astera (up the stairs to the left from the starting point when you return from a hunt)" -Wemibelle

(He is the tiny guy sitting on all the books books)

I've got 200 hours into Monster Hunter World with all monster's up to Diablos "research lv" bar full but only on level 0. I do investigations over and over, capture, kill and track every footprint...

Can someone please tell me how to level up the field guide? I would like to finally know monsters weaknesses without having to search online every time.

I am also wearing all gear that helps with scoutflies including the charm, helm, and waist thing.

Also, nothing ever comes up in search for this. I can't figure out how to properly word my search to get any good answers. I'm thinking my game is glitched as no one else seems to be stuck on this.

Thanks for any help.

No one?

Is anyone else still at level 0?

The only monster above 0 is the Great jagras, it's at level 1. On the Jagras I also get a "Physiology" tab which is what I want with the other monsters. I've seen videos of people online with several (maybe 4) tabs of info.

@brian3dw: Have you been going to the research guy in Astera (up the stairs to the left from the starting point when you return from a hunt)? You have to talk to him every time you hit a new level in order to tier up to the next one and earn more research.

O'my god! Thank you... That little guy sitting on a pile of books. I just talked to him and a full page 3 pages of monsters leveled up 3x.

I couldn't find it in any of the tutorials or anything.

If each character didn't have two pages of text everything time you want to talk to them for anything I might not have missed this info.

Thank you so much!

Hot tip, whenever you come back to astera and have research to turn in, a pop up will appear in the upper right corner of the screen will tell you to visit ecological research to turn it in. It also tells you when you level up specific monsters on the mission results screen. Hopefully this'll help

@failureatlife: Thanks, I do appreciate the response.

So many of those pop-ups come up that I think my eyes just glazed over. I would see those as the plants being ready or new investigations or the trailraider thing being done or part of the huge list of players joining the session and not even read them anymore.

Now I'll look the "ecological" header when I come back.