docs: add page for getting started

docs/getting_started.md

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+# Getting Started
+
+When you first launch the app, you will be greeted with the following screen:
+![getting_started](https://github.com/user-attachments/assets/0331ee30-910c-4210-ba95-aa8915d472ee)
+
+Your first step is to choose a starter template for your first [profile](profiles.md)
+![starter_template](https://github.com/user-attachments/assets/4295938c-3ecb-429a-a659-cd4bad3ae8a6)
+
+If your target language doesn't have an existing template, you can simply click custom and set it up later in "Setting up a new language".
+You can also make an issue and I will try to add that language at some later point.
+
+From there, if you are planning on using Anki, you can set up your Word Knowledge deck sources by clicking on the plus.
+If you see "Anki is not available", you may need to open Anki or make sure that AnkiConnect is actually installed. 
+You can hit the refresh button to make sure it is set up.
+See [Word Knowledge](word_knowledge.md) and [Word Knowledge Settings](word_knowledge_settings.md#Anki) for information on how to properly configure this.
+
+![20240825_20h20m40s_grim](https://github.com/user-attachments/assets/04b4711f-1cb9-42fa-836a-791a7da42b79)
+Installing and setting up stanza is generally recommended. See [Stanza](stanza.md) for details on when you would want to set it up.
+
+Congrats! You just did the main set up for Kalba. 
+If you are using the "custom" template to set up a new language, check out [Setting up a new language](new_language.md).
+Otherwise, you can jump directly to [Next Steps](next_steps.md).