Reddit mentions of Cooler Master DI4 7H51C 70mm Processor Cooler, Socket 423

Thank you for your help, kind stranger !

• I don't get what water cooling is, is it really better? Do I need to do anything with the fan, like fill it with wter, or do i just plug it in and voila?
  
  
• I'll really wait for the graphics card because i want to go all in later when i'll have enough money. I'm really used to playing games with a bad computer (GTAV all low in 800x600 on a 2017 dell XPS 13 for example, Intel integrated graphics and an I5 2.5GHz) and i'll probably stick to some csgo, gmod terraria and other smaller games haha.
  
  
• The cpu fan is a cooler master, looks a like it might be this one : https://www.amazon.com/Cooler-Master-7H51C-Processor-Socket/dp/B000I223LO
  
  
• The other fan I have is this one : https://www.amazon.com/PV902512L-DC12V-0-16A-3-WIRE-92x25mm/dp/B00B877C50
  
  
• Do you recommend anything for cooling? Since I don't have good fans, do I need to buy more. Even in the optic of buying a new graphics card (Probably the 11GB titan), and one that can still cool down the 78xx? Water cooling is cool to if you think it's better
  
  
• What do you think of this SSD? It's better looking and cheaper where I live : https://www.amazon.com/Samsung-500GB-Internal-MZ-76E500B-AM/dp/B0781Z7Y3S/ref=sr_1_3?s=pc&ie=UTF8&qid=1523216119&sr=1-3
  
  
• What's the difference between micro ATX and ATX? I'd prefer a "bigger" motherboard if it means better aeration, but i'm no expert. Plus, if my tower is big why not put a bigger motherboard in it? And will this one be able to support a better graphics card later? And i think it's a yes otherwise you wouldn't suggest this one but is it compatible with the I7?
  
• Edit : what do you think of the Asus PRIME Z370-P? : www.amazon.com/Z370-P-LGA1151-Motherboard-Generation-Processors/dp/B075RJHLBK/
  
  

• For the case, i can't find the one you're suggesting under 150€ ~ 180$ so what do you think of the Corsair Carbide 400C/270R/275R ?
  

  
  

  Anyway, thank you really much for your help, I know i ask a lot of questions but isn't this why this subreddit is made for? :)
  

  
  

  edit : this
  

  PCPartPicker part list / Price breakdown by merchant
  

  
  

  Type|Item|Price
  

  ----|:----|:----
  CPU | Intel - Core i7-8700K 3.7GHz 6-Core Processor | $410.00
  CPU Cooler | Corsair - H100i v2 70.7 CFM Liquid CPU Cooler | $129.00
  Motherboard | Gigabyte - H370M D3H Micro ATX LGA1151 Motherboard | $129.00
  Memory | G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-2800 Memory | $224.00
  Storage | Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive | $150.00
  Storage | Crucial - MX300 525GB M.2-2280 Solid State Drive | $0.00
  Case | Corsair - Carbide Series 275R (Black w/Tempered Glass) ATX Mid Tower Case | $104.00
  Power Supply | FSP Group - 650W 80+ Silver Certified ATX Power Supply | Purchased For $0.00
  Operating System | Microsoft - Windows 10 Home OEM 64-bit | Purchased For $0.00
  | Prices include shipping, taxes, rebates, and discounts |
  | Total | $1146.00
  | Generated by PCPartPicker 2018-04-08 16:05 EDT-0400 |