diff --git a/readme.md b/readme.md
index 55dc3e9..d5f0e3d 100644
--- a/readme.md
+++ b/readme.md
@@ -1,3 +1,20 @@
 # Leetcode
 
-My solutions
+- [My profile](https://leetcode.com/ordinary-dev/)
+
+## How to run solutions
+
+For programs written in C:
+
+```
+cd problems/random-problem
+make
+make run
+```
+
+## Solution structure
+
+For programs written in C:
+
+- `lib.c` - the solution itself
+- `main.c` - tests