diff --git a/README.md b/README.md
index 88445d6..bef86da 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,8 @@
   - [Linux Command Line Tutorial](/Basic_Computer_Skills_for_Forensics/3_Linux_command_line_tutorial.pptx)
   - [Advanced Linux Command Line Tutorial](/Basic_Computer_Skills_for_Forensics/4_Advanced_linux_command_line.pptx)
   - [Introduction to Digital Forensics](/Basic_Computer_Skills_for_Forensics/5_Introduction_to_digital_forensics.pptx)
+  - [Sleuth Kit Tutorial](/Basic_Computer_Skills_for_Forensics/6_Sleuth_Kit_Tutorial.pptx)
+  - [USB Image Acquisition](/Basic_Computer_Skills_for_Forensics/7_USB_Image_Acquisition.pptx)
 - Case Study
   - [Investigating P2P Data Leakage](#Investigating-P2P-Data-Leakage) (added on June 2021)
   - [Investigating NIST Data Leakage](#Investigating-NIST-Data-Leakage)
@@ -112,14 +114,12 @@ The [case study](https://github.com/frankwxu/digital-forensics-lab/tree/main/Ill
 
 | Labs  | Topics Covered                                                       | Size of PPTs |
 | ----- | -------------------------------------------------------------------- | ------------ |
-| Lab 0 | Intro USB_Image_Acquisition                                          | 2M           |
-| Lab 1 | Intro The Sleuth Kid Tutorial                                        | 1M           |
-| Lab 2 | HTTP Analysis using Wireshark (text)                                 | 3M           |
-| Lab 3 | HTTP Analysis using Wireshark (image)                                | 6M           |
-| Lab 5 | Rhion Possession Investigation 1: File recovering                    | 9M           |
-| Lab 6 | Rhion Possession Investigation 2: Steganography                      | 4M           |
-| Lab 7 | Rhion Possession Investigation 3: Extract Evidence from FTP Traffic  | 3M           |
-| Lab 8 | Rhion Possession Investigation 4: Extract Evidence from HTTP Traffic | 5M           |
+| Lab 0 | HTTP Analysis using Wireshark (text)                                 | 3M           |
+| Lab 1 | HTTP Analysis using Wireshark (image)                                | 6M           |
+| Lab 2 | Rhion Possession Investigation 1: File recovering                    | 9M           |
+| Lab 3 | Rhion Possession Investigation 2: Steganography                      | 4M           |
+| Lab 4 | Rhion Possession Investigation 3: Extract Evidence from FTP Traffic  | 3M           |
+| Lab 5 | Rhion Possession Investigation 4: Extract Evidence from HTTP Traffic | 5M           |
 
 ### Investigating Email Harassment