update contribution guide

docs/contributing.md

@@ -1,2 +1,36 @@
 # Contributing Guide
-TODO
+Thank you for wanting to contribute to the Decompilation Wiki! 
+Below are some simple tips to make requests for changes easier to review for the community. 
+
+If there are ever questions on good contributions, opening issues and discussion on Discord are the best mediums for feedback.
+
+## General Contributing Guide
+To make a change, open a PR on the [GitHub repo](https://github.com/mahaloz/decompilation-wiki) after [forking and making a branch](https://akrabat.com/the-beginners-guide-to-contributing-to-a-github-project/).
+There are two types of changes you might make while contributing to the wiki:
+
+1. Adding a listing to a new decompiler/tool/blog/...
+2. Updating a section regarding fundamental or applied research
+
+The best way to make PRs for these types of changes are different and found below.
+
+### Tool Listing Change
+When making changes to this area try to include three things:
+1. A link to any high-level description of it (papers are ok).
+2. Tags relevant to the tool (see sections like [Community Blogs](/misc/blogs))
+3. Tool source link if open-source 
+
+PRs in this category require no justification and will _very_ likely be merged after a simple review of the content. 
+
+### Research Area Update
+Changes to research areas require a little more than tool changes.
+If the change is a simple typo, no justification is needed and the PR will be accepted.
+
+However, if the change is more content-based, then it will require more explanations. 
+When making changes here, it will be important to either include a citation or a well-thought-out argument against current wording/posturing.
+Any links to community discussions are always appreciated, such as Reddit threads, Twitter threads, or blogs. 
+
+Additionally, any PRs that require larger discussion will likely be tied to a Discussion post on GitHub. 
+
+---
+
+Thank you for your efforts to improve the Decompilation Wiki!