Extend install instructions

docs/how-to-guides/install.md

@@ -9,6 +9,15 @@ pip install great-ai
 
 This will work on all major operating systems.
 
+## Google Colab
+
+In order to use GreatAI in [Google Colab](https://colab.research.google.com){ target=_blank }, you need to downgrade `pyyaml` to a Colab compatible version. [See related StackOverflow question](https://stackoverflow.com/questions/69564817/typeerror-load-missing-1-required-positional-argument-loader-in-google-col){ target=_blank }.
+
+```sh
+pip install great-ai pyyaml==5.4.1
+```
+> This will make GreatAI work in Colab.
+
 ## Command-line tools
 
 After installation, `great-ai` and `large-file` are available as commands. The former is required for deploying your application while the latter lets you manage models and datasets from your terminal.
@@ -33,3 +42,12 @@ If you wish to update to the latest version execute:
 ```sh
 pip install --upgrade great-ai
 ```
+
+## Bleeding edge
+
+You can also install the latest (usually unreleased) version from GitHub.
+
+```sh
+pip install --upgrade git+https://github.com/schmelczer/great-ai.git
+```
+> Python 3.7 or later is required.