Need Help About Parallax Scroll, Slideshows and Horizontal Align


After the couple of months study, I have learnt Html and Css, and next mission of mine is Javascript and Jquery.

Anyway, 2 weeks ago I dealed with a hotelkeeper to make them a website, they haven’t one. I wanted to make Parallax Scrolling web page but I don’t know how can I make it. So I followed this site’s steps
This is my second day to trying to make it. Actually, it seems good but I think I got in over my head. I hope someone help me, cause I want to finish this job as soon as possible and continue to learn positioning with Css, Layout and then Javascript.

I gave the content box 1px solid red, so maybe it will be helpful to understand problems.

Problem 1:
I couldn’t horizontal align the navbar:

Problem 2:
Slide 5 and Slide 6 (Suit Odalar and Normal Odalar) are far from the navbar when you click to move it.

Problem 3:
It was hard to place slideshows for me. And Its really basic one as you can see. What do you suggest about slideshows? I’m not happy to use that one.