diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..a49d08d
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,47 @@
+# Contributing to SMAP-L2-Gridding-Service
+
+Thanks for contributing!
+
+## Making Changes
+
+To allow us to incorporate your changes, please use the
+[Fork-and-Pull](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/getting-started/about-collaborative-development-models#fork-and-pull-model)
+development model:
+
+1. Fork this repository to your personal account.
+2. Create a branch and make your changes.
+3. Test the changes locally/in your personal fork.
+4. Submit a pull request to open a discussion about your proposed changes.
+5. The maintainers will talk with you about it and decide to merge or request
+   additional changes.
+
+For larger items, consider contacting the maintainers first to coordinate
+development efforts.
+
+## Commits
+
+Our ticketing and CI/CD tools are configured to sync statuses amongst each
+other. Commits play an important role in this process. Please start all commits
+with the Jira ticket number associated with your feature, task, or bug. All
+commit messages should follow the format
+"[Jira Project]-XXXX - [Your commit message here]"
+
+## General coding practices:
+
+This repository adheres to Python coding style recommendations from
+[PEP8](https://peps.python.org/pep-0008/). Additionally, type hints are
+required in all function signatures.
+
+When adding or updating functionality, please ensure unit tests are added to
+an appropriate module in the `tests` sub directories, which cover each branch
+of the code.
+
+## Disclaimer
+
+SMAP-L2-Gridding-Service maintainers will review all pull requests submitted. Only requests that
+meet the standard of quality set forth by existing code, following the patterns
+set forth by existing code, and adhering to existing design patterns will be
+considered and/or accepted.
+
+For general tips on open source contributions, see
+[Contributing to Open Source on GitHub](https://guides.github.com/activities/contributing-to-open-source/).
diff --git a/README.md b/README.md
index 3c9d3f6..9d55216 100644
--- a/README.md
+++ b/README.md
@@ -2,24 +2,53 @@
 
 This repository contains the code for the SMAP-L2-Gridding-Service, which is a python service that transforms NASA level 2 gridded trajectory data into gridded NetCDF4-CF output files.
 
-This code currently works on `SPL2SMP_E` data and will be adapted for other gridded trajectory data.
+This code currently works on `SPL2SMP_E` data and will be adapted for other SMAP collections of gridded trajectory data.
 
 
+## Transforming Data
 
+The logic of transforming data is contained in the `smap_l2_gridder` directory. It reads NASA L2 Gridded trajectory data and writes output NetCDF-CF files with the trajecotry style data correctly populated into EASE2 grids.
 
+### Commandline invocation
+To run the regridder on an input file.  Create an isolated python 3.12 environment using packages from the `pip_requirements.txt` file and then from the commandline run:
 
+```python
+python -m smap_l2_gridder --input path/to/granule.h5 --output path/to/output_granule.nc
+```
 
-## Transform Data
-To run the regridder, first create an isolated python 3.12 environment using packages from the `pip_requirements.txt` file.
+`smap_l2_gridder/__main__.py` is the entrypoint to the science logic module and can be used for testing and development.
 
-From the commandline run:
+## Directory structure
 
-```python
-python -m smap_l2_gridder --input path/to/granule.h5 --output path/to/output_granule.nc
 ```
+📁
+├── CHANGELOG.md
+├── CONTRIBUTING.md
+├── LICENSE
+├── README.md
+├── 📁 bin
+├── 📁 docker
+├── 📁 harmony_service
+├── pip_requirements.txt
+├── pyproject.toml
+├── 📁 smap_l2_gridder
+└── 📁 tests
+```
+
+* `CHANGELOG.md` -   Contains a record of changes applied to each new release of the SMAP-L2-Gridding-Service.
+* `CONTRIBUTING.md` -  Instructions on how to contribute to the repository.
+* `LICENSE` - Required for distribution under NASA open-source approval. Details conditions for use, reproduction and distribution.
+* `README.md` - This file, containing guidance on developing the library and service.
+* `bin` - A directory containing utility scripts to build the service and test images. A script to extract the release notes for the most recent version, as contained in `CHANGELOG.md` is also in this directory.
+* `docker` - A directory containing the Dockerfiles for the service and test images. It also contains `service_version.txt`, which contains the semantic version number of the library and service image. Update this file with a new version to trigger a release.
+*  `harmony_service` - A directory containing the Harmony Service specific python code. `adapter.py` contains the `SMAPL2GridderAdapter` class that is invoked by calls to the Harmony service.
+* `pip_requirements.txt` - Contains a list of python packages needed to run the service.
+* `pyproject.toml` - Configuration file used by packaging tools, and other tools such as linters, type checkers, etc.
+* `smap_l2_gridder` - Python package containing the logic for reformatting L2G data.
+* `tests` -  Contains the pytest test suite.
 
 
-## pre-commit hooks:
+## `pre-commit` hooks
 
 This repository uses [pre-commit](https://pre-commit.com/) to enable pre-commit
 checks that enforce coding standard best practices. These include:
diff --git a/pyproject.toml b/pyproject.toml
index 197e9af..f94992a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,6 @@
+[tool.ruff.format]
+quote-style = "single"
+
 
 [[tool.mypy.overrides]]
 module = "harmony_service_lib.*"