diff --git a/README.md b/README.md
index dd283ea..13ee054 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,25 @@ This repository is not yet complete but it will and for that it needs you to mak
 You like star it, you find it bugging then start working on it.
 
 Have a great time.
+
+## [1. Advanced Concepts/ Hashing](https://github.com/iamchiragsharma/Python-Advanced-Concepts/tree/master/Advanced%20Concepts/Hashing)
+-[Basic hashing](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Advanced%20Concepts/Hashing/Basic%20Hashing.ipynb)
+
+-[Open Addressing](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Advanced%20Concepts/Hashing/Open%20Addressing.ipynb)
+
+-[Seprate chining](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Advanced%20Concepts/Hashing/Seprate%20Chaining.ipynb)
+
+## [2. Advansed Optimization](https://github.com/iamchiragsharma/Python-Advanced-Concepts/tree/master/Advanced%20Optimizations)
+
+## [3. calendar Problem](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Calendar/base.py)
+
+## [4. Probablistic DS](https://github.com/iamchiragsharma/Python-Advanced-Concepts/tree/master/Probabilistic%20DS) 
+-[Bloom filter](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Probabilistic%20DS/Bloom%20Filter.ipynb)
+
+-[Count Min Sketch](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Probabilistic%20DS/Count%20Min%20Sketch.ipynb)
+
+-[Hyperloglog](https://github.com/iamchiragsharma/Python-Advanced-Concepts/blob/master/Probabilistic%20DS/HyperLogLog.ipynb)
+
+## [5. Python_C](https://github.com/iamchiragsharma/Python-Advanced-Concepts/tree/master/Python_C)
+
+## [6. Threading](https://github.com/iamchiragsharma/Python-Advanced-Concepts/tree/master/Threading)