You can install the theme in two ways: through WordPress, or via FTP. The Sima.zip file is the Installable WordPress Theme and what you need to use to get the theme installed. Please see the following sections for each method and watch our video tutorial on how to install Sima. But first, you need to download the Sima files from your Themeforest account. Navigate to your downloads tab on Themeforest and find Sima. Click the download button to see the two options. The Main Files and the Installable WordPress Theme. See below.

Sima Theme Folder – contains the Sima.zip and Sima-child.zip wordpress theme. The child theme is only for users who make code changes.
Sima.zip – this is the parent wordpress theme, install this via WordPress. If you install it via FTP then unzip it first and use the extracted folder.