Theoretically we should be able to open these Readme.md file by right clicking on them and open them with Notepad or other plain text editor. Is anybody able to open any these files and see what's changed since the last release? I don't know why Nick and coy are making this so difficult when a pdf file we can all open would be a much better solution instead of going with such a new format - frustrating!
I did manage to open one .md file, but all it contains is a list of training resource links.