Do people stay with one track or do people bounce around?

Personally, I bounce around when I need a rest at one language.

Personally I tend to have one track that i concentrate on as my main focus, css for example, but I will usually have a not to technical track like Business that I go in and out of from time to time just to break things up. I did at one point go between css and javascript but being as both of them require a lot of concentration and remembering of code it was too much for me at the time.

If by subject you mean programming language, then all the time. If by subject you mean type of development... also all the time! .NET developers sometimes pursue Web Development, Web Developers sometimes pursue developing Android and/or iPhone games, front-end people sometimes also work as back-end people... the list is exhaustive. Employers have diverse needs, which is why it can be helpful to learn diverse skills (for example, I don't even own an iPhone or a Mac, but I'm still studying iOS skills here out of curiosity and also in case I one day work for someone who can use those skills.)

At the same time, some folks certainly do stay in one concentration. I have some friends who've worked as automated testers of programs written in 1 or 2 languages (often including Java) for years. Ultimately, it all depends on the person, but knowing more and being versatile can, likely, only assist you.

Hope this helps!

Edit: Saw that you clarified that you mean the tracks here on Treehouse. Absolutely, some people do switch tracks (I was one of those people.) It depends on your learning style--in other words, if you're comfortable changing focus like that. If you are, I don't see why not!

Treehouse has 2 main ways to consume content:

• The Library
• Picking a track

A track only exists if you want someone to tell you what to do next. If you want to pick and choose that's what the library is for.