diff --git a/README.md b/README.md
index 584541c3577ad56a106f0d521fad496e3b6799a8..d15be70206f7af4c65a414e2fccc647ddafcf827 100644
--- a/README.md
+++ b/README.md
@@ -2,15 +2,42 @@
 
 This Twitter bot replies to tweets from [@xkcdComic](https://twitter.com/xkcdComic) with the alt text of the most recent XKCD comic.
 
-### Example
+## Example
 
 ![Example of tweet from @xkcdComic and the reply from @XKCDAltTextBot](https://i.imgur.com/11PR1gm.png)
 
-## Implementation
+## Building and Running the Bot
 
-This bot will run on the [Heroku](https://www.heroku.com/) platform. More details are coming soon!
+This bot is designed to run on [Heroku](https://www.heroku.com/), but it should work on other cloud platforms, and can even run on your computer.
 
-## Contributing and Forks
+### General Instructions (Start here.)
+
+Download the latest version of the bot as a ```.zip``` file [here], and extract it to your preferred folder.
+
+Obtain your Twitter API and access keys [here](https://developer.twitter.com). Then, change the respective names of the environmental variables on lines 137-140 of [the program](xkcd_alt.py) in this format:
+
+```python
+key = [os.environ.get('YOUR_API_KEY_HERE_ALL CAPS', None),
+           os.environ.get('YOUR_API_SECRET_KEY_HERE_ALL_CAPS', None),
+           os.environ.get('YOUR_ACCESS_TOKEN_HERE_ALL_CAPS', None),
+           os.environ.get('YOUR_ACCESS_SECRET_TOKEN_HERE_ALL_CAPS', None)]
+```
+
+Make all other modifications to the accounts you would like to interact with, and the formatting of your tweets. ([The official Twitter documentation is quite helpful for formatting.](https://developer.twitter.com/en/docs))
+
+### --> Running on a PC
+
+*This bot requires access to your environmental variables. The computer also needs to have [Python](https://www.python.org/) installed. Modify these steps as needed for macOS and Linux.*
+
+You will need the [Requests](http://www.python-requests.org/en/latest/), [Requests-OAuthlib](https://requests-oauthlib.readthedocs.io/en/latest/), and [BeautifulSoup](https://www.crummy.com/software/BeautifulSoup/) libraries. If you have [Pipenv](https://pipenv.readthedocs.io/en/latest/), you can install them by running the command ```pipenv install``` inside the folder; otherwise, run ```pip install -r requirements.txt```.
+
+Add your API keys and access tokens to your environmental variables by following [these instructions](https://java.com/en/download/help/path.xml). Then, just run ```python xkcd_alt.py``` in your command line and let it run! The bot respects the Twitter API limits, and will run every 60 seconds as long as the command line is open.
+
+### --> Running on Heroku
+
+Details are coming soon!
+
+## Forks and Contributing
 
 Feel free to fork this project and modify it for your own Twitter bot. (The license can be found [here](LICENSE).)
 
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3802cb9d9071d435f6c089b2330fca4b10c69a49
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,9 @@
+beautifulsoup4==4.6.3
+bs4==0.0.1
+certifi==2018.10.15
+chardet==3.0.4
+idna==2.7
+oauthlib==2.1.0
+requests-oauthlib==1.0.0
+requests==2.20.1
+urllib3==1.24.1
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