Thanks guys, you really help me with your tips.
One more question:
Back in 2006-2008 PSD to HTML&CSS was a very popular method for building website.
What is your process for building a website in 2014?
From what I learnt until now, I think the process is like this: Make a mockup in Photoshop and then open HTML&CSS editor and write as much code as you can without using slice methods etc.
Am I right?