Update README.md

Author: ifenty

Downloading_ECCO_datasets_from_PODAAC/README.md

@@ -1 +1,13 @@
-[Contribution guidelines for this project](docs/CONTRIBUTING.md)
+# Instructions for Downloading ECCO Datasets hosted on PODAAC
+
+## Using Python 3 & Jupyter Notebooks
+
+[Python 3 Jupyter Notebook (ipynb](Tutorial_Python3_Jupyter_Notebook_Downloading_ECCO_Datasets_from_PODAAC.ipynb)
+
+[Python 3 Jupyter Notebook (pdf)](Tutorial_Python3_Jupyter_Notebook_Downloading_ECCO_Datasets_from_PODAAC.pdf)
+
+## Using Command Line *_wget_* and NASA Earthdata
+
+[_wget_ command line instructions (markdown)](Tutorial_wget_Command_Line_HTTPS_Downloading_ECCO_Datasets_from_PODAAC.md)
+
+[_wget_ command line instructions (pdf)](Tutorial_wget_Command_Line_HTTPS_Downloading_ECCO_Datasets_from_PODAAC.md)