you click the download link and then open up your .minecraft file. Look it up if you don't know how to get there
then in your minecraft file open up the saves folder and drag the dowloaded map into the saves folder
To be completely honest, I beat the whole map on hardcore and got the 2 extra stars just for 100% on hardcore and to be honest, it was more fun than when I did it on survival.
This map is the greatest map I've EVER played. Not kidding. Parkour maps are not fun, survival maps (like skyblock) are just plain BORING, adventure maps almost tempt you to break blocks, CTM maps make us all ragequit, at least ONCE, but this map is in bewtween all of them.
A CTM map that not only has parkour that I actually enjoy, survival aspects in the MARIO environment and the ability to play your typical survival and use all your skills to beat this map is just plain AWESOME.
Please keep this up, as this easily is the greatest map of all time. Mainly because I love Mario and if I had the choice between one video game, I would easily go for Mario. I'd love to see Super Mario 64, like using the painting trick to go through paintings could lead you to a world, blah blah blah.