This post includes SCCM current branch guides. SCCM 2012 R2 was great but it is not being developed anymore. In this post I will be adding the links related to SCCM Current Branch deployment. These are very useful SCCM current branch step by step guides. If you are still using SCCM 2012 R2, these guides will help you to upgrade configuration manager to current branch. You can use it to deploy SCCM current branch in you lab quickly. As I publish the posts on SCCM current branch, I shall update the links here.
With SCCM 2012 R2 guides, there were lot of issues with downloading the files. The PDF files were downloaded from Technet gallery directly. In this post some downloads still point to technet gallery. So I would suggest to disable the pop-up blocker before you download the files because that usually blocks the downloads. Or you can open you browser in private mode or incognito mode and try downloading.
SCCM Current Branch Guides