I used Brackets.io to create my site. First version of site was made from example ("Getting started" page of Brackets). If you working with Ubuntu - you may use this PPA.
                To add repository and install Brackets using Linux terminal use 
                
sudo add-apt-repository ppa:webupd8team/brackets
sudo apt-get update
sudo apt-get install bracketsThen I decided to make a header and footer - the same for each page. Instead of using Ctrl+C, Ctrl+V I found a way how to include html files using jQuery load function. I copied JavaScript file to my folder and used such code from StackOverflow:
a.html:
<html>
  <head> 
    <script src="jquery-1.10.2.js"></script> 
    <script> 
    $(function(){
      $("#includedContent").load("b.html"); 
    });
    </script> 
  </head> 
  <body> 
     <div id="includedContent"></div>
  </body> 
</html>
b.html:
<p> This is my include file </p>Anna updated tutorials here. I installed Mercurial using tutorial for Ubuntu. In my opinion it's unnessesary to use "sudo" because all operations were made in home folder. Also I installed TortoiseHG using command "sudo apt-get install thg" to use graphical representation of modifications and changes.
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