I am new in Wp World ( Installing Themes from Forest)

Hi i found this thread http://www.blackhatworld.com/blackh...9-get-premium-wordpress-theme-megathread.html
and i tried a lot of times to install in wp by ( Dashboard - Appearance - Theme - Install - Upload ) and no thing happend a lot of problems appear to me so there is any way to install all wp themes ?

Thanks in Advanced

Sometimes when you buy themes from themeforest the zip you download needs to be extracted, as it will contain documentation, additional resources and the zipped up theme that you can upload. Try that first, see if it helps you.

First extract everything from the downloaded archive and check if you find any files with <your_theme_name>.zip file within that. Just upload that zip archive alone and it will be successful.