Gyanendra Giri

You want to use a static page as home page.

Follow these steps Static Front Page.

Yes, Your website is infected with SEO malware.

Follow these steps to clean it out. My site was hacked

Above plugin works for that purpose.

Try this plugin Bulk Comment Remove.
It should work.

Try this. It should work.

p.test p {
color:red;
}

Reason: the_excerpt() also outputs a paragraph tag(p) with output.

May be some links are embedded in your theme file.

Check header.php of theme.There maybe that code.

If you have not added this code then chances that it may be added by some malware.

Check this out My site was hacked

Follow Instructions on this forum post.

Database Error

You are welcome. ??

For creating Widgets you can check this Codex page.
Widgets API

Its code depends upon what you want to do with Widgets.But basic skeleton is shown in above link.

Thanks

Place this part in functions.php

add_action( 'widgets_init', 'deco_sidebar' );

function deco_sidebar() {
	register_sidebar(
		array(
			'id'            => 'deco_sidebar',
			'name'          => __( 'Правый сайдбар' ),
			'description'   => __( 'Виджет для правой колонки на сайте' ),
			'before_widget' => '<div class="popular-small cf" style="font-size:16px;">',
			'after_widget'  => '</div>',
			'before_title'  => '<a href="#">',
			'after_title'   => '</a>'
		)
	);
}

and second part

dynamic_sidebar( 'deco_sidebar' );

where you want to display the widget area.

For second part better code will be

<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('deco_sidebar') ) : 

endif; ?>

You are welcome.

Hi,

These are not encrypted string but HTML codes for special characters or symbols.Check this out for details HTML Codes

1. “%3$s” is output string from code.you don’t need to change it.Keep it as it is.

2. You can translate image but other part represents 3 dots(…)
3. it represents 3 dots(…)
4. it represents ←

Akismet works in most cases.

Are these spam comments are in spam section?
you can delete these spam comments at once.Once you select ‘Spam’ in comments there is a button ‘Empty Spam’.

You can try this plugin in plugin repository.
Disable Comments

By using it you can disable comments globally.

Is it custom menu?
You may remove it from menus in Appearance => Menus?

Or Provide a url where it is.