NiBi18

Do look in to alignment issues

I am definitely liking the individuality in your design. The background is to strong though and distracting from the content, the Clifton suspension bridge is such a well known landmark that you could easily get away with softening the image a lot more and it still being instantly recognized by visitors to your site.
 
Also the links are alternating red and blue, and the headlines are red an charcoal. I would use blue for the links and red for the headlines, or the other way about as long as it is consistent through the page.

The image you submitted is a big step up from your first design but here are a few suggestions
 
Blur out the background more make it just about viewable to what it is to re-focus things to your content
That logo really does need a complete rework, you need to work up concepts
The transparent top, Lose it, let the logo sit on it's own, centralised as it is will give it more focus
On the right, don't do blue red blue red etc stick to one of the other and use the colour you don't use as the title
Increase your menu font size
 
And I think that's it ;-)

never use bevel and emboss for logo
look into logopond for some logo inspiration
 
i am not a big fan of the background image ..
subtle texture wud have been better ?
 
look into smashing magazine for portfolio themes or look for themeforest themes

Stuff like this needs to be much more simpler. Having a community site that complicated wont get used much and wont be popular. Id suggest looking at having basic colour theme with nice touches to it instead of the big blurred background and the bevel logo. that is a bit old bevel. Logopond is good or you can try dribble. The logos on that are **** hot!!

Exercise principles found here:
http://www.creativebloq.com/graphic-design/pro-guide-logo-design-21221
http://www.hongkiat.com/blog/5-tips-to-simplify-your-web-design/
 
And you'll come out the other side with a more polished logo and layout. I could point out individual things but the emphasis should be on the principles at this point I think.
 
Hope that helps mate.

use codecademy , it will help you to improve your english as well

I'm sure theres a better way had a few beers so head not functioning
 
div { width:450px; border:1px solid red; overflow:hidden; } ul { width:100%; list-style-type:none; display:table; margin:0; padding:0; } li{ padding: 0 5px; border:1px dotted green; display: table-cell; width: auto; text-align: center; }