In your index.php or index.html file in the main directory of your site, put the following markup codes between the <head> and </head> tags.
<link rel="icon" href="URL of your favicon">
If you are using HTML5 and not using the <head>...</head> tag, just put the above markup code before you start the <body> tag.
To change title, just do the same thing as above but type the following codes:
<title>Your Website Title</title>