in-using.md file added.

Author: MairwunNx

documentation/in-using.md

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+> ## Documentation for basically using Warps module.
+
+## 1. For playing and running minecraft:
+
+#### 1.1 Download Warps mod module.
+
+Visit **Warps** repository on github, visit **releases** tab and download `.jar` files of latest _pre-release_ / release (**recommended**)
+
+Releases page: <https://github.com/ProjectEssentials/ProjectEssentials-Warps/releases>
+
+#### 1.2 Install Warps modification.
+
+The minecraft forge folder structure below will help you understand what is written below.
+
+> ##### Important note: don't forget install mod dependencies!
+
+- core: <https://github.com/ProjectEssentials/ProjectEssentials-Core/releases>
+- permissions: <https://github.com/ProjectEssentials/ProjectEssentials-Permissions/releases>
+
+
+```
+.
+├── assets
+├── config
+├── libraries
+├── mods (that's how it should be)
+│   ├── Project Essentials Warps-1.14.4-1.X.X.X.jar
+│   ├── Project Essentials Core-MOD-1.14.4-1.X.X.X.jar.
+│   └── Project Essentials Permissions-1.14.4-1.X.X.X.jar.
+└── ...
+```
+
+Place your mods and Warps mods according to the structure above.
+
+#### 1.3 Verifying mod on the correct installation.
+
+Run the game, check the number of mods, if the list of mods contains `Project Essentials Home` mod, then the mod has successfully passed the initialization of the modification.
+
+After that, go into a single world, then try to write the `/warp test` command, if you **get "warp not exist"**, then the modification works as it should.
+
+#### 1.4 Control your warps via minecraft commands.
+
+We made the commands for you:
+
+```
+/warp <warp name>
+
+- description: base command of warps module; just teleport you to target warp point.
+
+- permission: ess.warp
+```
+
+```
+/setwarp <warp name>
+
+- description: set new warp point and now it warp point pnly owned by you. 
+
+- permission: ess.warp.set
+```
+
+```
+/delwarp <warp name>
+
+- description: remove named warp point.
+
+- note: only warp owner can remove target warp point!
+
+- permission: ess.warp.remove
+```
+
+### For all questions, be sure to write issues!