diff --git a/README.md b/README.md
index 36cd69d..22e602e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,23 @@
-# just_simple_cryptography
+Simple cryptography mini-libraries for C++ and Python.
+Just work.
 
-Simple cryptography mini-libraries for C++ and Python.
-Just work.
\ No newline at end of file
+## How to use
+1. Install `make` (watch your distro package)
+2. Install botan2 [as in wiki](https://botan.randombit.net/handbook/) / [in git](https://github.com/randombit/botan) / [install from your distro.](https://github.com/randombit/botan/wiki/Distros)
+3. Run examples with make:
+* C++ all: `make`
+* C++ build: `make build`
+* C++ run: `make run`
+* Python: `make run_python`
+
+## If you have trouble (with install botan) and you on Debian
+1. Install botan2 from repo:
+* Download botan2 from repo https://github.com/randombit/botan (BOTAN2!!!, NOT 3)
+* Join inside folder
+* `python configure.py --prefix=/usr/local`
+* `make -j4` (-j4 is 4 threads)
+* `make install` (with root)
+2. Install packages from repo: `apt install botan libbotan-2-dev python3-botan`
+
+## If you have trouble with finding libs
+You SHOULD set `BOTAN_PATH` and `LD_LIBRARY_PATH` by YOURSELF if you have trouble (`mlocate` will help you: `updatedb`, `locate botan-2` and etc)
\ No newline at end of file