• Go to the WordPress website’s Dashboard  menu option Settings
• Choose  Discussion
• Then uncheck or tick the box labelled  “Allow people to post comments on new articles”

  You can also hack the comment code in the PHP files such as single.php, page.php or anywhere it exists. A simple way to find the code  is to a search for the text that always appears with the comments. Searching all the PHP files can be achieved with your PHP editor if the facility exists, e.g. Microsoft WebMatrix.

Simply insert this piece of JavaScript where you would like to see the width displayed. This is useful to test a devices resolution.

<div id="widthInfo">
</div>

<script>
    var x=screen.width;
    var para = document.createElement("P");
    var t = document.createTextNode(x);
    para.appendChild(t);
    document.getElementById("widthInfo").appendChild(para);
</script>

Using “document.write(screen.width)” is not going to work by the way.

First you need to add a function to your function.php file. Do this in your child theme folder. See creating a child theme.

First create the mobile menu in the Appearance -> Menus admin screen. Call it mobile-menu.

Now, in your theme’s functions.php, you need to write a function to register th names of your mobile menu. This is the name you gave them in the Appearance -> Menus admin screen above.  Here I am register one called ‘mobile-menu’

function register_my_menu() {
register_nav_menu(‘mobile-menu’,__( ‘menu-mobile’ ));
}
add_action(‘init’, ‘register_my_menu’ );

The next stage is to place the line below where your main menu is, in WordPress twenty fourteen it’s called primary. (There can be a secondary too). Look for the line below in the header.php file. (use a copy in the child folder)

<?php wp_nav_menu( array( ‘theme_location’ => ‘primary’, ‘menu_class’ => ‘nav-menu’ ) ); ?>

add below it this line:
<?php wp_nav_menu( array( ‘theme_location’ => ‘mobile-menu’, ‘menu_class’ => ‘mobile_menu’ ) ); ?>

Next add the following to your child theme’s style.css file.  Basically it works by checking the resolution of the screen before which of the WordPress menus are dispayed

/* hide mobile menu */
.mobile_menu {
display:none;
}
@media screen and (max-device-width : 480px) {
.primary-navigation{
display:none;
}
.mobile_menu {
display:block;
}
}
/* Tablets and lower */
@media screen and (max-width: 1008px) {
.primary-navigation {
display:none;
}
.tab_menu {
display:block;
}
}

Create your ‘movile-menu’ menu using the Appearance-menu  option

Done – now test it

Check out the WordPress Codex information. Really useful for a newbie WordPress website developer

As a WordPress developer you will need to get to grips with modifying the themes you are using for a website during its design. Child versions of themes are very important if you do modify a theme and wish to avoid losing your code during an update of the parent theme.

Create a folder on your webserver in the /wp-content/themes folder using FTP or your hostings file manager.  For example if the theme you are using is “twentyseventeen” and is set up in:

/wp-content/themes/twentyseventeen

then create

/wp-content/themes/twentyseventeen-child

In this folder create a  file called style.css and into the file place the following  code:

/*
 Theme Name:   Twenty Ten Child
 Theme URI:    https://yoursite.com/twenty-ten-child/
 Description:  Twenty Ten Child Theme
 Author:       Yourself
 Author URI:   https://example.com
 Template:     twentyseventeen
 License:      GNU General Public License v2 or later
 License URI:  https://www.gnu.org/licenses/gpl-2.0.html
*/
@import url("../twentyseventeen/style.css");
Simply add you replacement/overriding css here.

You may also place any modified files such as header.php, footer.php, sidebar.php in here too. These will overide the equivalent in the parent theme.

Change the theme to the child in the Appearance menu on the WordPress desktop.

Summary of Roles

There are several WordPress roles you can give them beginning with the lowest

The Subscriber

Basically all they a can do is edit their site profile

The Contributor

Here they can ‘contribute’ to the site by adding and editing their own WordPress posts, but the finally say on whether they appear is yours.

The Author

This user can do everything a contributor can do, but they are able to publish the post themselves so that it appears on the site.

The Editor

Again, this user has the abilities of the earlier ones, but they can also edit other Author and Contributors posts.

The Administrator

Everything is possible by this type of users, including post and page additions and managagement, site design and menu maintenance.

The Super Admin

As for the Administrator, with the ability to manage WordPress Network features