Safari Fonts

Hi!!!
I have been trying to change the font style of my safari browser and there is no way possible to change it.
I went to the preferences and nothing.
I went to library/preferences/com.apple.Safari.plist and nothing!!!
How can i put the default fonts back again???
it has a weird looking font and I cant read it!!!
I need to work with google and I cant understand a word!!!!

Can somebody help me???

Thanks & Bless

You should be able to change fonts in Safari preferences.
Safari Menu > Preferences > Appearance

Standard font: ______ Select..
Fixed-width font: ______ Select..

If that doesn't work, please explain "nothing" if you want advice.

Nada de nada

Nothing = it does not work, I change the font type and I also press select and it still the same weird font.
is not making any changes!!!!

You have a font clash, you will have to disable some recent fonts in fontbook to find the font that is clashing with one of the system fonts