The links you provided are all from the old version of the site. There shouldn't be any links to any of these pages internally - so you've probably clicked onto the site from an external source. If you go to the proper homepage of the site, that is,
http://www.inside3d.com, you will find the correct, current, Getting Started page along with all the QC tutorials in our php based system. The old site (which is still up on the server for some reason) is likely to have a lot of missing or outdated information.