docs: add user guide on valuta

docs/desktop/gnome/valuta.md

@@ -0,0 +1,56 @@
+---
+ title: Valuta
+ author: Christine Belzie
+ contributors:
+---
+
+## Introduction
+
+ If you often travel or are moving abroad, ease your finanical planning with Valuta. This application quickly converts currencies between two countries.
+
+## Assumptions
+
+This guide assumes you have the following:
+
+- Rocky Linux
+- Flatpak
+- FlatHub
+
+
+## Installation process
+
+![Screenshot of the Valuta page on Flathub with the blue install button highlighted in a red square](images/01_valuta.png)
+
+1. Go to [Flathub.org](https://flathub.org), type "Valuta" in the search bar and click  **Install**
+
+  ![manual install script and run script](images/valuta-install.png)
+
+
+2. Copy the manual script in your terminal:
+
+    ```bash
+    flatpak install flathub io.github.idevecore.Valuta
+    ```
+
+
+3. Finally, the manual script in your terminal:
+
+    ```bash
+    flatpak run flathub io.github.idevecore.Valuta
+    ```
+
+## How to Use
+
+To use Valuta, do the following:
+
+1. Choose the country that you currently live in from the dropdown menu and type the amount of cash you want to spend.
+
+    ![Screenshot of Valuta app showing 1000 USD in the input field, with a grey arrow pointing down to a grey box showing 1000 USD](images/02_valuta.png)
+
+2. Choose the country you are traveling to from the dropdown menu.  From there, the converted amount automatically appears.
+
+![Screenshot showing a grey arrow pointing upward to a green box displaying the converted amount, 899.52 EUR](images/03_valuta.png)
+
+## Conclusion
+
+Whether it’s for a vacation or a business trip, Valuta simplifies currency conversion. Want to learn more or share ideas to improve it? [Submit an issue in Valuta's repository at GitHub](https://github.com/ideveCore/valuta/issues).