Let me tell you <title></title> tag is very important in any web page this what search engines shows as title on their search and <title> is very important for web pages to index them in search engine , the title should maximum 75 words, which describe your web page what that web page is about.
So never forget to add your <title>Your website title | WEb page title</title> this also appears in top of browser and in google and other search engines index heading. Here is how you add your title in your html document.
<title>Your web page Title</title>
See the photo below to see how title shows in browser title bar