Instead of looking at tons of different threads, I thought maybe we could get a single thread that answers the technical questions for the amateurs. After the relative disappointment in the 2016 MacBook Pros, I bought my first ever Apple computer (2015 MacBook Pro: 15.4", 16gb, 256gb, Sierra). I am coming from a Windows OS to a Mac OS, having used a PC my entire life. I have already become used to some of the MacBook's features and have done a plethora of research online, however I do have some questions. Others, feel free to add/edit/answer questions or share your opinions, even if it is one worded. Thank you! -Is better to install apps/programs from their respective websites or the app store? -In saying that, how do you delete or uninstall unwanted programs? (Drag the .dmg file to the bin?) -How can you delete the preference files? -What is time machine/how often should I use it? (It serves as a backup, but more info would be awesome!) -What is filevault and how does it affect my laptop's performance? -Should I leave firewall on or off? -How much cpu/ram/memory should kernal task be using on average? I believe mine fluctuates between 800mb-1.1gb. -In Finder, I cannot go back to a previous page by using the two-finger swipe. Is this normal? -Is there an app for quitting all apps at once OR for quitting the app after you press the x (like on Windows)? -How much battery life does background apps use such as safari if you forget to quit them? -Optimal video scale resolution? -Any battery saver tips, such as limiting notifications, siri, spotlight search, etc.? -Best settings for initially setting up laptop/eventual use?