add docs for DANDI hub

docs/50_hub.md

@@ -0,0 +1,28 @@
+# Using the DANDI Hub
+
+[DANDI Hub](http://hub.dandiarchive.org) is a [JupyterHub](https://jupyterhub.readthedocs.io) instance in the cloud to interact with the data stored in DANDI, and is free to use for exploratory analysis of data on DANDI.
+For instructions on how to navigate JupyterHub see this [YouTube tutorial](https://www.youtube.com/watch?v=5pf0_bpNbkw&t=09m20s).
+Note that DANDI Hub is not intended for significant computation, but provides a place to introspect Dandisets and to perform some analysis and visualization of data.
+
+## Registration
+
+To use the [DANDI Hub](http://hub.dandiarchive.org), you must first register for an account using the [DANDI website](http://dandiarchive.org).
+
+## Choosing a server option
+
+When you start up the DANDI Hub, you will be asked to select across a number of server options.
+For basic exploration, Tiny or Base would most likely be appropriate.
+The DANDI Hub also currently offers Medium and Large options, which have more available memory and compute power.
+The "T4 GPU inference" server comes with an associated T4 GPU, and is intended to be used for applications that require GPU for inference.
+We request that users of this server be considerate of their usage of the DANDI Hub as a free community resource.
+Training large deep neural networks is not appropriate.
+A "Base (MATLAB)" server is also available, which provides a MATLAB cloud installation but you would be required to provide your own license.
+
+## Example notebooks
+
+The best way to share analyses on DANDI data is through the DANDI example notebooks.
+These notebooks are maintained in the [dandi/example-notebooks](https://github.com/dandi/example-notebooks) repository which provides more information about their organization.
+Dandiset contributors are encouraged to use these notebooks to demonstrate how to read, analyze, and visualize the data, and how to produce figures from associated scientific publications.
+
+Notebooks can be added and updated through a pull request to the [dandi/example-notebooks](https://github.com/dandi/example-notebooks) repository.
+Once the pull request is merged, your contributed notebook will be available to all DANDI Hub users.

mkdocs.yml

@@ -37,6 +37,7 @@ nav:
     - Notes: "40_development.md"
     - REST API Swagger: https://api.dandiarchive.org/swagger
     - REST API Redoc: https://api.dandiarchive.org/redoc
+  - DANDI Hub: "50_hub.md"
   - Terms and Policies:
       - Terms: "about/terms.md"
       - Policies: "about/policies.md"