you can create this characters for your site.

 ™           Trademark

&      &        Ampersand

®               Registered trademark

©             Copyright

†           Dagger

»             Right pointing double angle quotation mark

«             Left pointing double angle quotation mark

—            Em-dash

°     30       Degree

¼          Quarter

½          Half

¾         Three quarters

·          Middle dot

¡              Inverted exclamation mark