diff --git a/02_Presentation/documentation/codeStructure.md b/02_Presentation/documentation/codeStructure.md
index de6ad5b3e7ce02d7a0469c77563dc1748f497bbe..4c70f551ca8a4f72818ee58674481fe5f45f92b4 100644
--- a/02_Presentation/documentation/codeStructure.md
+++ b/02_Presentation/documentation/codeStructure.md
@@ -2,6 +2,7 @@
 # Installation and Code Structure
 
 ## Installation
+- Pull code from [here.](https://gitlab.cba.mit.edu/amiraa/metavoxels-code)
 - Julia (I am developing using Julia 1.5.2)
   - [Download and Install Julia](https://julialang.org/downloads/)
   - [Install Julia Libraries (Packages)](https://datatofish.com/install-package-julia/)
@@ -45,7 +46,7 @@
 
 ## Tutorial
 - clone: https://gitlab.cba.mit.edu/amiraa/metavoxels-code
-- Jupiter Notebook Tutorial [here](https://gitlab.cba.mit.edu/amiraa/metavoxels-code/MetaVoxel_Tutorial.ipynb)
+- Jupiter Notebook Tutorial [here.](https://gitlab.cba.mit.edu/amiraa/metavoxels-code/-/blob/master/jupyter/MetaVoxel_Tutorial.ipynb)
 - to run a julia jupyter kernel 
   - open julia.exe then type the following commands:
     - `using IJulia`
@@ -233,8 +234,9 @@
       - I am using `rhino3dm` library in javascript to facilitate buidling intrecate geometries
     - `main.js`
       - contains all `three.js` scene building and animation
-  - `app.js`
-    - contains code to run the simulation headless (either in javascript or julia) using nodejs
+  - **node** 
+    - `app.js`,`app1.js`,`serve.js`
+      - contains code to run the simulation headless (either in javascript or julia) using nodejs
   - **fea**
     - old folder containing the old structure and physics simulation in javascript
     - `barFea.js`
diff --git a/02_Presentation/hierarchy/hierarchy.md b/02_Presentation/hierarchy/hierarchy.md
index fec993beeb470390897a22ddf790c1ceeb591dce..877d2b2f8df2e0545419a98103f2a67bb9e43c42 100644
--- a/02_Presentation/hierarchy/hierarchy.md
+++ b/02_Presentation/hierarchy/hierarchy.md
@@ -2,9 +2,9 @@
 
 Going from thousands of elements (FEA/DEM) to hundred of elements (Beam Theory) to tens of elements (Homogenization and hierarchy).
 
-<img src="./main_beam.png" width="70%" />   <br>
-<img src="./comp.png" width="70%" />   <br>
-<img src="./hier.gif" width="70%" />   <br>
+<img src="./main_beam.png" width="60%" />   <br>
+<img src="./comp.png" width="60%" />   <br>
+<img src="./hier.gif" width="60%" />   <br>
 
 ### Example:
 
@@ -107,13 +107,13 @@ Going from thousands of elements (FEA/DEM) to hundred of elements (Beam Theory)
 ---
 ## Multi-Scale Hello World
 
-<img src="./non_ax.png" width="70%" />   <br>
+<img src="./non_ax.png" width="60%" />   <br>
 
 - non axial forces
 - new hierarchial representation with nodes having parents and children
   
-<img src="./multiscale.png" width="100%" />   <br>
-<img src="./multiscale.gif" width="100%" />   <br>
+<img src="./multiscale.png" width="60%" />   <br>
+<img src="./multiscale.gif" width="60%" />   <br>
 10 nodes, 14 edges vs 3 nodes, 2 edges
 
 ---
@@ -140,20 +140,22 @@ Going from thousands of elements (FEA/DEM) to hundred of elements (Beam Theory)
 dt ∝ particle mass, the smaller the particle the smaller dt, ∴ more timesteps needed
 
 <br><br/>
-<img src="./comp_graph.png" width="80%" /> 
+<img src="./comp_graph.png" width="70%" /> 
 
 ----
 ## MADCAT
 
-<img src="./m1.png" width="33%" /> 
-<img src="./m2.png" width="33%" /> 
-<img src="./m3.png" width="33%" /> 
+<img src="./m1.png" width="31%" /> 
+<img src="./m2.png" width="31%" /> 
+<img src="./m3.png" width="31%" /> 
 
 <br><br/>
 
-<img src="./c1.png" width="33%" /> 
-<img src="./c2.png" width="33%" /> 
-<img src="./c3.png" width="33%" /> 
+<img src="./c1.png" width="31%" /> 
+<img src="./c2.png" width="31%" /> 
+<img src="./c3.png" width="31%" /> 
+
+<br><br/>
 
 
 ---
diff --git a/README.md b/README.md
index a3c51bd3c7a0ad9502bb6bc828a11a54aaa505b2..b510e24a2c7fdc65164ae7fc9b543751fc12a281 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ I am now using this gitlab project for documentation only, the code lives [here]
 <!-- - [Group](https://gitlab.cba.mit.edu/groups/metavoxel/-/shared) -->
 - [Code Project](https://gitlab.cba.mit.edu/amiraa/metavoxels-code): https://gitlab.cba.mit.edu/amiraa/metavoxels-code
 - [Installation and Code Structure](02_Presentation/documentation/codeStructure.md)
-  - [Tutorial](https://gitlab.cba.mit.edu/amiraa/metavoxels-code/-/blob/master/MetaVoxel_Tutorial.ipynb)
+  - [Tutorial](https://gitlab.cba.mit.edu/amiraa/metavoxels-code/-/blob/master/jupyter/MetaVoxel_Tutorial.ipynb)
 - [GPU Parallelization and Scaling](02_Presentation/performance/performance.md)
 
 ---