Re @WebstackDev Check out our github + wiki:
Best thing to do is get your hands dirty with some good first issues in the core repo :)
https://github.com/microsoft/vscode/wiki/Source-Code-Organization
https://github.com/microsoft/vscode/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22

https://twitter.com/code/status/1450166576926310405