What is News Ticker?
In some news website, you can see a virtual news bar where some news are showing just like a electrical banner, it is called news ticker. You can use news banner for providing latest news to your visitors. Or, you can show recent post/popular post rather than news.
At first, login you wordpress site then go to Dashboard>Appearance>Editor and open header.php. Then copy and paste below code in header.php and save it.
Then open footer.php file and copy and paste below code in footer.php and save it.
Then go to functions.php, copy and paste below code in functions.php before then ?> and save it.
Then open style.css file, copy and paste below code in style.css and save it.
Now go to index.php file and open this, then copy and paste below code in index.php and save it.
After completing following works perfectly, refresh your home page, you can see a news ticker in your wordpress blog.