Updated In Depth Tutorial (markdown)

In-Depth-Tutorial.md → Setup-Tutorial.md

@@ -16,7 +16,10 @@ The cookie values are needed because a Google account (any Google account) is re
 
 ### Run locally
 
-WIP
+## Setup
+- Ensure that `python` 3.8.5, `zip`, `curl`, and `rsync` are installed on your system.
+- Install the Python module requirements in the requirements.txt file (`pip install -r requirements.txt`).
+- Because the captioning editor is only available to logged-in users, you must specify the values of three session cookies for any Google account (`HSID`, `SSID`, and `SID`). You can get these cookie values by opening the developer tools on any youtube.com webpage, going to the "Application" (Chrome) or "Storage" (Firefox) tab, selecting "Cookies", and copying the required values. These values can be specified in the `config.json` file or as environment variables (`SSID`, `SID`, `HSID`). The `TRACKER_USERNAME` can also be specified in `config.json` or as an environment variable. This is the name that is used for the [dashboard](https://tracker.archiveteam.org/ext-yt-communitycontribs/).
 
 ### Heroku