Things are best learned when you have a real application for them. Come up with a list of information or communication need you have and work on those. Being new to Linux I recommend that you learn CLI by examining things. For the most part make changes with the GUI. It will all come together for you over time. Another good thing to do is to scan forums like this one to see if anything posts interest or apply to you. One thing you'll learn is that not all people that offer help actually understand what they're suggesting or are pehaps offering help that applied to a different problem or release of Linux than you are using. When ever you take advice fully reseach it to make you understand what your actions will do.