You can try some official e - book platforms like Amazon Kindle. They often have a wide range of novels available, including 'danmachi' novels. Some other e - reading apps might also carry it.
You can try some fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - made stories related to Danmachi. Another option could be FanFiction.net, which also hosts a wide variety of fanfiction works including those for Danmachi.
To read Danmachi, try searching on major online literature platforms. Some fan communities or forums might also point you in the right direction. Or you could look for it in brick-and-mortar bookstores that carry a wide range of fiction.
The 36 psychological skills to get out of the bottom of life can be found in Jin Shengrong's successful inspirational novel, 36 psychological skills to get out of the bottom of life. This book integrated different cases to tell readers how people from all over the world faced the low point of life and successfully got out of it. The specific 36 psychological techniques can be found in this book.