Update installation instructions to use miniforge/mamba (#491)

* Miniforge edits part 1

* Eliminate Anaconda distribution references

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

foundations/conda.md

@@ -31,16 +31,17 @@ Package management is useful because you may want to update a package for one of
 
 ## Installing Conda
 
-We recommend you install Miniconda. You can do that by following the [instructions for your machine](https://docs.conda.io/en/latest/miniconda.html).
+We recommend you install Miniforge. You can do that by following the [instructions for your machine](https://github.com/conda-forge/miniforge).
 
-Miniconda only comes with the `conda` package management system; it is a pared-down version of the full Anaconda Python distribution.
+Miniforge uses the `conda` package management system and is based on Miniconda, which is a pared-down version of the full Anaconda Python distribution.
 
 [Installing Anaconda](https://docs.anaconda.com/anaconda/install/) takes longer and uses up more disk space, but provides you with more functionality, including Spyder (a Python-specific integrated development environment or IDE) and Jupyter, in addition to other immediately installed packages. Also, the interface of Anaconda is great if you are uncomfortable with the terminal.
 
-We recommend Miniconda for two reasons:
+We recommend Miniforge for these reasons:
 
 1. It's quicker and takes up less disk space.
 2. It encourages you to install only the packages you need in reproducible isolated environments for specific projects. This is generally a more robust way to work with open source tools.
+3. It uses `conda-forge` as the default channel for packages.
 
 Once you have `conda` via the Miniconda installer, the next step is to create an environment and install packages.
 

foundations/jupyter.md

@@ -24,7 +24,7 @@ You'd like to learn to run Python in a Jupyter session. Here we will cover:
 
 To run a Jupyter session, you will need to install some necessary packages into your Conda environment.
 
-Install `miniconda` by following the [instructions for your machine](https://docs.conda.io/en/latest/miniconda.html).
+Install `miniforge` by following the [instructions for your machine](https://github.com/conda-forge/miniforge).
 
 [Learn more about Conda here](conda.md)
 
@@ -41,11 +41,7 @@ $ conda activate pythia_foundations_env
 $ jupyter lab
 ```
 
-Or you can install the full [Anaconda](https://www.anaconda.com/products/distribution), and select **LAUNCH** under the Jupyter panel in the GUI.
-
-![Anaconda Navigator](../images/Anaconda.png)
-
-In both methods, a new window should open automatically in your default browser. You can change the browser when launching from the terminal with (for example):
+A new window should open automatically in your default browser. You can change the browser when launching from the terminal with (for example):
 
 ```
 jupyter lab —browser=chrome
@@ -121,4 +117,5 @@ Jupyter notebooks are a free, open-source, interactive tool running inside a web
 
 ## Resources and References
 
-- [Anaconda](https://www.anaconda.com/products/distribution)
+- [conda-forge](https://conda-forge.org)
+- [Miniforge Releases](https://conda-forge.org/miniforge/)

foundations/terminal.md

@@ -21,7 +21,7 @@ You'd like to learn to run Python in the terminal. Here we will cover:
 
 ## Installing Python in the Terminal
 
-If you are running Python in the terminal, it is best to install Miniconda. You can do that by following the [instructions for your machine](https://docs.conda.io/en/latest/miniconda.html).
+If you are running Python in the terminal, it is best to install Miniforge. You can do that by following the [instructions for your machine](https://github.com/conda-forge/miniforge).
 
 [Learn more about Conda here](conda.md)