How to call our custom sidebar on the required position?

Go to 
<a> wp-admin folder.
<b> themes.
<c> select your current theme.
<d> Open required file such as 'header.php', 'footer.php', index.php',
           'page.php' or any custom page template and paste the following code
in the required container such as <div>, <span> etc. and pase the following code.
<e> Here 'copy_right' is the id of the custom sidebar.

<?php dynamic_sidebar('copy_right'); ?>

How to create our custom sidebar?

Go to 
<a> Wordpress admin panel.
<b> Appearance.
<c> Editor.
<d> Open config.php file from 'Themes Functions' section.
<e> Append the following code in 'functions.php' file...
<f> Here sidebar 'id'='copy_right' which is used to call it on the required
                                position and 'name' => __( 'Footer Copy Right', 'twentyeleven' ) 
                                which is display in admin panel widget area.

function twentyeleven_widgets_init() 
{
register_sidebar( array(
'name' => __( 'Footer Copy Right', 'twentyeleven' ),
'id' => 'copy_right',
'description' => __( 'An optional widget area for your site footer', 'twentyeleven' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => "</aside>",
'before_title' => '<h3 class="widget-title">',
'after_title' => '</h3>',
) );
}
add_action( 'widgets_init', 'twentyeleven_widgets_init' );

How to add custom CSS classes in wordpress last and first menu items?

Go to 
<a> Wordpress admin panel.
<b> Appearance.
<c> Editor.
<d> Open config.php file from 'Themes Functions' section.
<e> Append the following code in 'functions.php' file...
<f> Here last menu item class is 'last' and first menu item class is 'first'.

function wpb_first_and_last_menu_class($items) 
{
$items[1]->classes[] = 'first';
$items[count($items)]->classes[] = 'last';
return $items;
}
add_filter('wp_nav_menu_objects', 'wpb_first_and_last_menu_class');

How to create a custom post type in wordpress?

Go to 

<a> Wordpress admin panel.

<b> Appearance.

<c> Editor.

<d> Open config.php file from 'Themes Functions' section.

<e> Append the following code in 'functions.php' file...

<f> Here post type name is 'Programs'.

   <g> You may call anything instead of 'Programs'.

add_action( 'init', 'prowp_register_my_post_types' );

function prowp_register_my_post_types() 

{

register_post_type( 'programs',

array(

'labels' => array(

'name' => 'Programs',

'singular_name' => 'Programs',

'add_new' => 'Add New Programs',

'add_new_item' => 'Add New Programs',

'edit_item' => 'Edit Programs',

'new_item' => 'New Programs',

'all_items' => 'All Programs',

'view_item' => 'View Programs',

'search_items' => 'Search Programs',

'not_found' => 'No programs found',

'not_found_in_trash' => 'No Programs found in Trash',

'parent_item_colon' => '',

'menu_name' => 'Programs'

),

'public' => true,

'public' => true,

'has_archive' => true,

'taxonomies' => array( 'category' ),

'rewrite' => array( 'slug' => 'product' ),

'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'comments' )

)

);

}