Aqui vai o procedimento de instalacao de Joomla!3.4.x em imagem
(http://aplicimagens.info/image-43BC_56780C56.jpg)
(http://aplicimagens.info/image-D997_56780C56.jpg)
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(http://aplicimagens.info/image-5488_56780F85.jpg)
(http://aplicimagens.info/image-EE7F_56780F85.jpg)
Se tiver alguma duvida podera postar aqui