docs: update install instructions

docs/install.md

@@ -1,32 +1,56 @@
 # 🚀 Install
 
+## Online usage (Binder)
+
+See below for the full installation instructions. If instead you'd like to use
+this package online, without needing to install anything, check out our
+[Binder link](https://mybinder.org/v2/gh/mdtanker/invert4geom/main), which
+gives full access the the package in an online environment.
+
+This Binder environment can also be accessed by clicking the Binder icon in any
+of the `gallery` or `tutorial` examples.
+
+## Install Python
+
+Before installing *Invert4Geom*, ensure you have Python downloaded. If you don't, I recommend setting up Python
+with Miniforge. See the install instructions
+[here](https://github.com/conda-forge/miniforge).
+
+## Install *Invert4Geom* Locally
+
 There are 3 main ways to install `invert4geom`. We show them here in order of
 simplest to hardest.
 
-## Conda / Mamba
+### Conda / Mamba
 
-```{warning}
-Conda install instructions still to come ...
-```
+The easiest way to install this package and it's dependencies is with conda or
+mamba into a new virtual environment:
+
+    mamba create --name invert4geom --yes --force invert4geom
 
-## Pip
+Activate the environment:
 
-You can install via pip, but some of the dependencies include packages which can
-only be installed by other means, such as `conda` or `mamba`.
+    conda activate invert4geom
 
-First create a `conda` environment and install the necessary packages into that:
+### Pip
+
+Instead, you can use pip to install `invert4geom`, but first you need to install
+a few dependencies with conda. This is because a few dependencies rely on C packages, which can only be install with conda/mamba and
+not with pip.
 
 ```{note}
 `conda` and `mamba` are interchangeable
 ```
 
+Create a new virtual environment:
+
 ```
-mamba create --name invert4geom polartoolkit python=3.11
+mamba create --name invert4geom --yes --force polartoolkit
 ```
 
 The package `polartoolkit` provides several useful functions used in
 `invert4geom`. Since `polartoolkit` has several dependencies that can't be
-install with `pip` (mostly `pygmt`), it is easiest to install with `conda`.
+install with `pip` (mostly `pygmt`), it is easiest to install with `conda` or `mamba`.
 
 activate the environment and use `pip` to install `invert4geom`:
 
@@ -37,35 +61,37 @@ pip install invert4geom
 
 ```{note}
 to install the optional dependencies, use this instead:
-`pip install [all]`
+`pip install invert4geom[all]`
 ```
 
-## Locally
+### Development version
 
-To get a local version of the package and include that in your environment
-follow these instructions.
+You can use pip, with the above created environment, to install the latest
+source from GitHub:
 
-clone the GitHub repository and change directories into it:
+    pip install git+https://github.com/mdtanker/invert4tgeom.git
 
-```
-git clone https://github.com/mdtanker/invert4geom.git
-cd invert4geom
-```
+Or you can clone the git repository and install one of two ways:
+
+#### with Make
 
-assuming you have `Python` and `make` installed, as well as `mamba` (install
+Or, assuming you have `make` installed, as well as `mamba` (install
 mamba with `pip install mamba`) installed within your Python environment, run
 the following to install the package locally:
 
 ```
+git clone https://github.com/mdtanker/invert4geom.git
+cd invert4geom
 make create
 conda activate invert4geom
 make install
 ```
 
-If you don't have or want `make` or `mamba` installed, you can accomplish the
-same with the following:
+#### manually
 
 ```
+git clone https://github.com/mdtanker/invert4geom.git
+cd invert4geom
 conda create --name invert4geom --yes --force polartoolkit python=3.11
 conda activate invert4geom
 pip install -e .[all]