The fix malware problem Codex has an outline of what permissions are okay. File and directory permissions can be changed through an FTP client or within the page from the hosting company.
Basically, it all will start with the fundamentals. Try to use passwords. Use special characters, numbers, letters, and spaces and combine them to make a password. You could also use usernames that are not obvious.
Exclude pages - This plugin provides a checkbox,"include this page in menus", which is checked by default. If you uncheck it, the page won't appear in any listings of pages (which contains, and is ordinarily limited to, your webpage navigation menus).
You may extend the plugin features with premium plugins like: Amazon S3 plugin, Members only plugin, DropShop etc.. I view publisher site think this plugin is a fantastic choice and you can use it.
Of course it's possible to set up more plugins to make your shop like automatic plugin or share buttons. That's all. Your shop is now up and running!