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 ¼         Quarter

½ ½         Half

¾ ¾        Three quarters

· ·         Middle dot

¡     ¡         Inverted exclamation mark