diff --git a/README.md b/README.md
index fbfe503..3e4dab5 100644
--- a/README.md
+++ b/README.md
@@ -1,17 +1,45 @@
-jcal
-====
+# jcal
+
 <a href="https://repology.org/project/jcal/versions">
     <img src="https://repology.org/badge/vertical-allrepos/jcal.svg" alt="Packaging status" align="right">
 </a>
-Jalali calendar is a small and portable free software library to manipulate date and time in Jalali calendar system.
-It's written in C and has absolutely zero dependencies. It works on top of any POSIX.1-2001 (and later) compatible
-libc implementations. Jalali calendar provides an API similar to that of libc's timezone, date and time functions.
 
-Jalali calendar package consists of a library namely libjalali and two simple and easy to use terminal tools, jcal
-and jdate with functionality similar to UNIX cal and date.
+Jalali calendar is a small and portable free software library to manipulate date and time in [Jalali calendar system][jalali-calendar-system].
+
+It's written in C and has absolutely zero dependencies. It works on top of any POSIX.1-2001 (and later) compatible libc implementations. Jalali calendar provides an API similar to that of libc's timezone, date and time functions.
 
+Jalali calendar package consists of a library namely [libjalali][libjalali] and two simple and easy to use terminal tools, `jcal` and `jdate` with functionality similar to UNIX `cal` and `date`.
 
 ---
 
+## Install from Source
+
+```bash
+git clone https://github.com/persiancal/jcal.git
+```
+
+`cd jcal/sources`
+
+```bash
+./autogen.sh
+```
+
+The above step generates the `configure`, then invoke
+
+```bash
+./configure
+```
+
+The above step generates the `Makefile`, last step for installation invoke:
+
+```bash
+make install
+```
+
+---
 This library was written and maintained by Ashkan Ghasemi, he passed away in an [accident](https://jadi.net/2017/10/ashkan-ghasemi/).
 Therefore there is no way to migrate the original repository to another person, so this fork is for keep the project alive.
+
+
+[jalali-calendar-system]: https://en.wikipedia.org/wiki/Jalali_calendar
+[libjalali]: ./sources/libjalali/jalali.c