I noticed that ESRI has already updated their resources on Github to SDK 3.0, which is significant different than SDK 2.x. To access the previous SDK resources for v. 2.x, I need to clone the repository of the SDK resources on Github. I was able to clone the repo, but I am not sure if I did it correctly and how to access it. I used Git Bash to clone the SDK resources on GIthub at https://github.com/Esri/arcgis-pro-sdk.git by following these steps: https://docs.github.com/en/repositories/creating-and-managing-repositories/cloning-a-repository. The only part I didn't do is step #5, which is to "change the current working directory to the location where you want the cloned directory." Therefore, I just accepted the default clone pathway. Should I redo the process and clone it to the desktop or where should I clone the repository? How can I access the cloned repository? This is the first time I need to clone a repository. Thanks for your help!
You can go to "Releases" (on the ArcGIS Pro SDK Community Samples GitHub home page on the right side below the 'About' section): Releases · Esri/arcgis-pro-sdk-community-samples (github.com)
Go to the release you want to work with and download (under assets) the sample data you like to work with and the source code.
If you clone the repo in Visual Studio you can change the GitHub branch to the release you like to work with, however, you will still have to download the corresponding datasets from the Release (see above).
How can I get a copy of the documentation resources for SDK 2.8? Thanks Wolf!
For the API Reference help you can just replace the '/latest/' in the help URL with the version you're working with for example:
https://pro.arcgis.com/en/pro-app/2.9/sdk/api-reference/index.html#topic1.html
Examples snippets are available by cloning this repository: Esri/arcgis-pro-sdk: ArcGIS Pro SDK for Microsoft .NET is the new .NET SDK for the ArcGIS Pro Applic...
Unfortunately the wiki with ProConcepts, ProSnippets and ProGuides is not versioned.
Correction: you can clone the wiki as well, but you have to read the md pages using a browser. The viewing experience is not very good.