A: There is no time limit on how long you will take to finish a course or a track. You can watch the training videos at your convenience and learn at your own pace - taking enough time to drill deeper into specific topics, and explored those of particular interest to you as many times as you want. At any time you exit the portal, all your progress will be saved and you can jump right back into where you left off.
Tip: Use the plan functionality, by saving the courses you are interested in and organizing your individual learning agenda.