Add detailed user guide content

README.md

@@ -41,6 +41,8 @@ such as year taken and camera make.
 
 ## Getting started
 
+For detailed instructions: [link](USERGUIDE.md)
+
 **Install prerequisites:**
 
 - Java 17 or later

USERGUIDE.md

@@ -0,0 +1,52 @@
+# User guide
+
+Here's an extended version of content from the [general README](README.md).
+
+## General setup
+
+If you have not built the application yet, please follow the general README
+to get started first.
+
+### Dropbox setup
+
+Set mode to `DROPBOX` in `Main.java`
+
+<img src="images/dbx-step-1.png" width="500" alt="Dropbox step 1"/>
+
+Configure Dropbox credentials in `config.properties`
+
+<img src="images/dbx-step-2.png" width="250" alt="Dropbox step 2"/>
+
+### Google Drive setup
+
+Set mode to `GOOGLE_DRIVE` in `Main.java`
+
+<img src="images/drive-step-1.png" width="500" alt="Drive step 1"/>
+
+Configure Google Drive credentials in `config.properties`
+
+<img src="images/drive-step-2.png" width="250" alt="Drive step 2"/>
+
+## Run migration
+
+- Open your terminal and navigate to the `./photohaul` directory
+- Run the command `gradle run`. This will start the migration to Google Drive
+
+<img src="images/migration-step.png" width="1000" alt="Migration step"/>
+
+## Validate migration
+
+Once the migration is complete, you can verify that your photos have been uploaded
+to Google Drive. Here's an example of how I validate the output for Google Drive.
+
+Folder creation
+
+<img src="images/validate-step-1.png" width="1000" alt="Validate step 1"/>
+
+Photo creation in 2015
+
+<img src="images/validate-step-2.png" width="1000" alt="Validate step 2"/>
+
+Photo creation in 2024
+
+<img src="images/validate-step-3.png" width="1000" alt="Validate step 3"/>