After E3 I decided that I wanted to get into PC gaming, but since I don't know much about PCs, I wouldn't dare to build it myself. After doing some basic research, I ordered a custom PC from an online store. It was cheaper than buying an alienware/HP/Asus PC.  I paid around £1 000 pounds. Is this a good built? I mean I don't know anything about motherboard or RAM.  

6th Generation Intel® Core i5 6600K 3.5GHz
Kingston HyperX Fury Black 16GB (2x8GB) DDR4 PC4-21300 2666MHz Dual Channel (Skylake)
NVIDIA GeForce GTX 1070 Founders Edition
MSI Z170A GAMING PRO CARBON Intel Z170 (Socket 1151) ATX Motherboard                                                                                                                                                    Power Station V2 Modular 600 Watt PSU

I still can change the order if needed. However I've run out of money, but please let me know if you have any suggestion to improve the aspects.

Yep that's a good build, I'm not sure about the brand of PSU but the main thing to get right is the CPU and the GPU and both are fine. The GPU will be the bottleneck in the system as with most.

16gb of ram is more than enough, I've not come across anything requiring more than 8gb of ram, at least when it comes to gaming.

This system should last you a long time, I'm still on my gtx 670 and I can run most games at high 1080p no problem.

Thats a really solid PC tbh.

Just rough estimates looking at US newegg prices:
cpu 250$
gpu 440$
ram 60$
MB 150$
PSU 50$

HDD 50$
cabinet 50$
cpu cooler 50$

That PC is atleast 1100$ to build yourself in the US (830 £).
And things cost abit more in EU than in the US, so your probably not loseing much just buying a pre assembled PC.

Seems like a good buy (if they where cheating you by large amounts, Id say so instead, but they arnt).

Good setup if you're willing to pay that much. If you're going with 1080p this should last you quite a while with rock solid 60 fps.

Where'd you get that, man? That's quite a deal for something you didn't build yourself.

No mention of harddrives? Gonna guess you didn't get yourself a SSD in there, I would advise you to check over the order and see if it's possible at any point to add one for the OS at the very least, a 240gb SSD now can cost you under €100 and really add a ton of value to your PC, at 240gb you'll be able to keep windows, any crucial programs and a selection of games on the SSD storage for ultra fast boot times and loading in those games.

Cannot recommend getting a SSD enough to any PC user.

Wow, that's almost the exact same build I'm thinking about going with when I build my gaming PC. (Well, same GPU and CPU, which is what's most important anyway).

Id love to do my pc gaming, its just digital only that turns me off. I guess im old school.

I did get a 240gb SSD for the OS, but I do need to buy a second HDD. I was thinking about buying a 1T SSHD at some point next month and installing it myself. 

It's not really a deal. Bearing in mind that the price doesn't include an internal Disk Drive and the OS. You can find similar prince in any online store that let you choose the componts you want.