I'm new to Apptio and am part way through the Apptio Recognized TBMA R12 Learning Plan.  While exploring the community I found several Instructor-led courses that look interesting and useful such as CT Foundation and several for reporting that aren't mentioned on my plan or the Elite Plan.      Is there any reason I should not sign up for these courses?  I.e. do you recommend focusing on a learning plan then take additional courses?    Just trying to figure out a strategy. 

Thanks in advance.

The courses on the learning plan will give you a good foundation and may help make some of the more advanced classes make sense.  But I would still encourage you to take other classes that seem of interest to you, especially the instructor led classes that are not available whenever you want like the videos.