I feel like this should already be a thing. Gamepress is barely seen anywhere in game and many newer or even older players avoid making compositions for "cq" off the pretense that they don't know how to improve their comps. A simple link that can be found in game would be more than enough honestly. Simply make it a small pop up like the pop up that appears when you learn about enhancements and upgrading units for the first time. It would do a great deal to educate players so they understand this games in-depth mechanics. This would also clear out a lot of channels in this discord so more talk about the game could be held vs purely questions about it.
#Link to the gamepress expansive battle guide in game.
jolly wagon
thorny basalt
While I understand your point, the game already shows a shortcut to the Gamepress LostWord main page as the "wiki" in the home screen (pic related) and Gamepress themselves suggest visiting our Discord and their related discussion channels.
I'll leave this suggestion open though. Maybe someone else can improve the idea or give another perspective as suggestions are always appreciated by the developers 
fast totem
Imo, it could be included in tutorial and give seal crystals for checking gamepress. I feel like not many players click the links in-game
jolly wagon
While my suggestion lacked proper wording what I mean is i would like a pop up somewhere in the character upgrade area that gives a direct link to the battle guide. To help others. Nobody clicks on the wiki or discord buttons unless they'll really desperate for information afterall.
sand frost
What if they implement a system where if you get defeated multiple times in the same stage, a window pops up that gives links to helpful articles.
jolly wagon
Something along these lines. Maybe if you lose in an ele ex stage for the first time it gives a small pop up innthe corner with a direct link to that stages guide and the advanced battle guide.