making my first pc. tips?

[ObeseWalrus]

Get a Mechanical keyboard, it will be the most solid thing that you've ever owned and it is also orgasmic for your fingers to type on.

[Marnsto]

My favorite websites in the Netherlands are probably azerty and alternate, since they deliver your stuff very quick and are quite cheap. I went on and made a nice build for you. 

Link to the build

Total cost €2024 with sending. 

You could swap out the dual R9 290's, but from seeing benchmarks they get a lot more fps than the GTX 780Ti and cost only €150 more.

[sand0oski]

I'd stick with the 4770K if you are going to be playing around with video editing and rendering.  The hyper threading will help and if you got the cash then you might as well lol.