I simply do not understand how your courses are selected and displayed using the Tracks and Library Icons on the left.

When you click Home you'll be able to continue where you left off. Clicking on Tracks will allow you to view all of them, including the one you are currently taking. On the Tracks screen you'll also be able to select a new one and 'hop tracks' making the new one the active one that you will now see on your Home screen. While your on the tracks screen you can also click the name of the track to be taken to a screen where you will see the break down of the course. If its one you're currently working on then you can also see what your current progress is, how far along you are. At any time you can click different modules in the course and replay any of the content that you would like. Some times they update modules due to newer technology being released, so you can review old modules that have been updated to get current training as well.

Yes.. I understand that, kind of However when I switch tracks and then switch back to a previous track it takes me to the beginning of the course, which I have already completed. It wants me to start at the beginning again. It is totally confusing to determine where I have been and where I should be.

Right, so click on the track you want to learn, for this example I will click on iOS Development which I am only partially done with. Click resume track.

It may take you into a specific class, if you think that is behind you or you don't know where you're at then click the course name at the top left of the screen.

Now again you have your overview of what you've accomplished. So in this example I myself would click on Build a Blog Reader and click resume. From there I can click on any video/challenge within that module.

It is simply screwed up. At the top it gives a description of where I am at and the instructors name (which is correct), but when I click resume it takes me back to my previous instructor and course,