Text quest, Android, Unity, how to stop crying from misunderstanding step by step?

Question

Unity

Good luck to the Toaster craftsmen :)
I'm trying to understand Unity in order to create a text quest. However, finding more or less suitable information was not so easy to find. Almost everything I found was about unity 3d, and I didn’t see anything to solve some of my specific tasks. (Perhaps just hands from the wrong place, yes)
I would be sincerely grateful if you could tell me at least an approximate algorithm of actions in some matters.
1. There is text. Lots of text. How to make him friends with Unity, so that in the end something unbearable in volume would not come out, and able to live quietly in a mobile application.
2. How to make a side panel that opens on click, similar to the one that stands by default in Twine, Sugarcube.
In fact, there are many more questions, but it would be cruel to write fifty basic problems here, I hope that I can deal with them myself. *nervous laughter*
If you leave the lessons or anything else about unity, focused specifically on quests, then I will melt with happiness right in your hands.

Answer 1

I did not see anything to solve some of my specific tasks

solutions to specific problems and will not. You will always have to adjust.
More than enough official lessons.
And, apparently, we should start not with Unity, but with c#.

Answer 2

Most likely it will be easier for you to make such a game using Godot
https://www.youtube.com/watch?v=bS-tX2HopW0
there are also lessons in Russian https://youtube.com/user/SkanerSoft/videos
There are also framework https://github.com/godotengine/escoria just sharpened for interactive point-and-click games

Answer 3

Unity text games are made with ink .