diff --git a/README.md b/README.md
index d8b2780..ec7323c 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,130 @@
 
 Project for the AA 2023/2024 **Complementi di programmazione**'s course of the Master Degree in Computer Science.
 
-# How to start
+## How to build
+
+You first need to build the project using the Makefile.
+
+```
+make build
+```
+
+## Run
+
+You can run the software using the following command
+
+```
+java -cp lib/antlr-4.13.1-complete.jar:out Main <file.py>
+```
+
+you also can use three flags on the execution:
+
+- `--optimize`: runs the optimizer for the file `<file.py>`. The optimized
+  version is auto saved at `./optimized.py`.
+
+- `--tree`: shows the AST on video and on JFrame.
+
+- `--exec`: executes the SVM for the Assembly code generated in `code.asm`.
+
+You can use all the three flags togheter if you want to.
+
+## Example
+
+- Optimizer 
 
-```shell
-make
-make run
-make runall
 ```
+$ java -cp lib/antlr-4.13.1-complete.jar:out Main test/2a.py --optimize
+n=int(input())
+x=int(input())
+m=1
+tmp=2 * x
+while n>1:
 
-For archlinux users, add the following env variable to visualize the window: `export _JAVA_AWT_WM_NONREPARENTING=1`
+        m=m*tmp
+        n=n-1
+
+
+print(m+tmp)
+
+Saving optimized file...
+Everything is OK!
+```
+
+- Tree
+
+```
+$ java -cp lib/antlr-4.13.1-complete.jar:out Main test/2a.py --tree
+Root
+  SimpleStmts
+    SimpleStmt
+      Assignment
+        ExprList
+          Expr
+            AtomNode: n
+        Augassign(=)
+        ExprList
+          Expr
+            AtomNode: int
+            TrailerNode
+              ArglistNode
+                Expr
+      Assignment                                                                                                                                                                                             [40/225]
+    [...] 
+    SimpleStmt
+      Expr
+        AtomNode: print
+        TrailerNode
+          ArglistNode
+            Expr
+              Expr
+                AtomNode: m
+              Expr
+                AtomNode: tmp
+              Op(+)
+
+Everything is OK!
+```
+
+- Exec
+
+```
+$ java -cp lib/antlr-4.13.1-complete.jar:out Main test/3-1.py --exec
+Creating VM code...
+Executing assemply code...
+0: 17 ----- SP = 999, FP = 999, AL = 998, RA = 0, A0 = 0, T1 = 0
+1: 17	999 ----- SP = 998, FP = 999, AL = 998, RA = 0, A0 = 0, T1 = 0
+2: 17	999	998 ----- SP = 997, FP = 999, AL = 998, RA = 0, A0 = 0, T1 = 0
+3: 7	999	998	999 ----- SP = 996, FP = 999, AL = 998, RA = 0, A0 = 0, T1 = 0
+4: 9	999	998	999 ----- SP = 996, FP = 996, AL = 998, RA = 0, A0 = 0, T1 = 0
+5: 7	999	998	999 ----- SP = 996, FP = 997, AL = 998, RA = 0, A0 = 0, T1 = 0
+[...]
+216: 18	999	998	999	998	29	2	14	997	996	29	3	140	992	991 ----- SP = 985, FP = 987, AL = 986, RA = 140, A0 = 1, T1 = 1
+217: 5	999	998	999	998	29	2	14	997	996	29	3	140	992 ----- SP = 986, FP = 987, AL = 986, RA = 140, A0 = 1, T1 = 1
+218: 7	999	998	999	998	29	2	14	997	996	29	3	140	992 ----- SP = 986, FP = 992, AL = 986, RA = 140, A0 = 1, T1 = 1
+219: 11	999	998	999	998	29	2	14	997	996	29	3	140	992 ----- SP = 986, FP = 992, AL = 992, RA = 140, A0 = 1, T1 = 1
+220: 18	999	998	999	998	29	2	14	997	996	29	3	140	992 ----- SP = 986, FP = 992, AL = 991, RA = 140, A0 = 1, T1 = 1
+221: 24	999	998	999	998	29	2	14	997	996	29	3	140 ----- SP = 987, FP = 992, AL = 991, RA = 140, A0 = 1, T1 = 1
+222: 19	999	998	999	998	29	2	14	997	996	29	3	140 ----- SP = 987, FP = 992, AL = 991, RA = 140, A0 = 1, T1 = 1
+223: 9	999	998	999	998	29	2	14	997	996	29	3 ----- SP = 988, FP = 992, AL = 991, RA = 140, A0 = 1, T1 = 1
+224: 18	999	998	999	998	29	2	14	997	996 ----- SP = 990, FP = 992, AL = 991, RA = 140, A0 = 1, T1 = 1
+225: 5	999	998	999	998	29	2	14	997 ----- SP = 991, FP = 992, AL = 991, RA = 140, A0 = 1, T1 = 1
+226: 7	999	998	999	998	29	2	14	997 ----- SP = 991, FP = 997, AL = 991, RA = 140, A0 = 1, T1 = 1
+227: 11	999	998	999	998	29	2	14	997 ----- SP = 991, FP = 997, AL = 997, RA = 140, A0 = 1, T1 = 1
+228: 18	999	998	999	998	29	2	14	997 ----- SP = 991, FP = 997, AL = 996, RA = 140, A0 = 1, T1 = 1
+229: 24	999	998	999	998	29	2	14 ----- SP = 992, FP = 997, AL = 996, RA = 140, A0 = 1, T1 = 1
+230: 19	999	998	999	998	29	2	14 ----- SP = 992, FP = 997, AL = 996, RA = 140, A0 = 1, T1 = 1
+231: 9	999	998	999	998	29	2 ----- SP = 993, FP = 997, AL = 996, RA = 14, A0 = 1, T1 = 1
+232: 18	999	998	999	998 ----- SP = 995, FP = 997, AL = 996, RA = 14, A0 = 1, T1 = 1
+233: 5	999	998	999 ----- SP = 996, FP = 997, AL = 996, RA = 14, A0 = 1, T1 = 1
+234: 7	999	998	999 ----- SP = 996, FP = 999, AL = 996, RA = 14, A0 = 1, T1 = 1
+235: 11	999	998	999 ----- SP = 996, FP = 999, AL = 999, RA = 14, A0 = 1, T1 = 1
+236: 18	999	998	999 ----- SP = 996, FP = 999, AL = 998, RA = 14, A0 = 1, T1 = 1
+237: 24	999	998 ----- SP = 997, FP = 999, AL = 998, RA = 14, A0 = 1, T1 = 1
+238: 18	999	998 ----- SP = 997, FP = 999, AL = 998, RA = 14, A0 = 1, T1 = 1
+239: 18	999 ----- SP = 998, FP = 999, AL = 998, RA = 14, A0 = 1, T1 = 1
+240: 25 ----- SP = 999, FP = 999, AL = 998, RA = 14, A0 = 1, T1 = 1
+
+Result: 1
+
+Everything is OK!
+```