Update README.MD

README.MD

@@ -4,3 +4,23 @@
 - Use Quiltflower by default via loom-quiltflower by Juuxel
 - Automatically apply the Quilt Mappings on Loom plugin
 
+## Contributing
+### Setting up the project
+Clone the project like normal **in a command line!**: `git clone git@github.com/quiltmc/quilt-loom quilt-loom-parent`.
+Do **not** open the parent project (the root of this github repository) in your IDE. Instead,
+run `./gradlew applyPatches` and import the newly created `patched-quilt-loom` subfolder into your IDE.
+
+### Making a PR
+This section is for people who are looking to add new features to Loom, fix a bug, etc. 
+
+Commit your changes as normal **in the `patched-quilt-loom` subproject**. Please keep it to one commit per feature; use amend commits
+(`git commit --amend` or the "Amend" checkbox in the Intellij IDE), a soft reset, or interactive rebase to change the patches (for example, to respond to feedback).
+
+*Even if your PR changes code introduced in other patches, ONLY submit your changes as a NEW patch. A maintainer will manually merge your changes into the patches later.*
+
+Once your changes are committed, `cd` to the parent project and run `./gradlew makePatches`. Once they're generated, commit the new patch as normal.
+
+If you have questions about this process, the best way to reach us is to ask on our [Discord](https://discord.quiltmc.org/), but opening an issue works too!
+
+## Maintaining
+(TODO; tl;dr update the fabric-loom subproject, run gradlew applyPatches, fix conflicts as directed using git am --continue, run gradlew makePatches, profit)