Boyue recently sent an update for the Likebook Mars. After the update, I noticed a new instruction application icon that opens a user manual for the Likebook Mars. The manual isn't extensive - it guides the user, for example, how to manage bookshelf settings, how to upload books via Wi-Fi, where to place dictionaries, how to access the third-party applications features menu and how to upgrade the software etc. However, it doesn't tell the user what the purpose of many of these features is.
Anyway, it is a positive Boyue are now working on providing instructional content. One of the weaknesses of the Likebook Mars is its confusing software and this manual does help guide the user where to find key features.