http://dev.w3.org/html5/html4-differences/

http://en.wikipedia.org/wiki/HTML5

http://dev.w3.org/html5/spec/Overview.html

NoSql
Wikipedia NoSql
MongoDB

JavaScript
node.js
Wikipedia Node.js
Express JS

To add widgets to your theme, you must have or create a ‘widget area’ as a widget placeholder and a widget to add to your widget area.

In the functions.php file of your theme, you can create a custom widget area by using the following code.

if (function_exists('register_sidebar')) {
  register_sidebar(array(
    'name'=> 'Hello World Widget Area',
    'id' => 'hello_world',
    'before_widget' => '<div id=\"%1$s\" class=\"widget %2$s\">',
    'after_widget' => '</div>',
    'before_title' => '<div id=\"div_hello_world_title\">',
    'after_title' => '</div>',
));}

Hello World Widget

This simple method does not use the extension of the WP_Widget class, which is the preferred method.
In the functions.php file of your theme, add the following code for the HelloWorld Widget.

  function widget_helloworld() {
     echo \"Hello World!\";
  }
  if (function_exists('register_sidebar_widget')) {
     register_sidebar_widget(__('Hello World Widget'), 'widget_helloworld');
  }

To add your widget to the dynamic sidebar:
- Go to your WordPress Dashboard > Appearance > Widgets, and
- Drag’n'drop the Hello World Widget to the dynamic sidebar on the right.

Hello World Template

Finally, you need a template to include your widget area. Create a helloworld.php file and include the following code.

<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('Hello World Widget Area')) : ?>
  <!-- if widgets are not available -->
<?php endif; ?>