new rig

Hi Guys! I am actually working on my new and first pc (assembled). I have already bought the hard disk(2tb), Monitor, Case, Keyboard and Mouse. I wanted some expert advice on the rest of the parts. The link is- System Builder - Core i7-8700K 3.7GHz 6-Core, GeForce GTX 1080 Ti 11GB STRIX GAMING...

1. What is the purpose of the computer? What all applications and games are you going to run? (Stupid answers like 'gaming' or 'office work' will not work. Be exact. Which games? Which applications? Avoid the word 'et cetera.') Ans:INTERNET BROWSING ,WATCHING HD MOVIES AND HD VIDEO ONLINE...