How to place icon on upper side home page ?

Hello to all. Sorry i posted this topic on general template discussion for error.

please can you help me to place on upper side of home page (near logo) an icon with link possibility to another page? (i need it for multilanguage site).
Where i must go (which menu) to go to insert it in the joomla control panel? many thanks !!

1. Place module (language switcher or custom html module with link in it - whatever you use) in logo position.
2. Set ordering so this module you placed is before module containing logo
3. Set module class suffix " top-module" , note first letter is blank char
4. In template_css.css add css like this:

.top-module{
position:absolute;
margin-top:...
margin-right:...
}

use margin-top and margin-right to tune position of module , you can use negative values like -40px;