Keep headers/logos under 125 pixels high. It takes up valuable viewing space, especially for laptop users, that is best left for the good stuff to appear"above the fold" Take a cue from the big companies, simple logos done well say it all. This is our #1 pet peeve - screaming logos and headers!
The fix wordpress malware plugin Codex has an outline of what permissions are okay. File and directory permissions can be changed via an FTP client or within the administrative page from your web host.
The one I recommend, and the approach, is to use one of the creation and storage plugins available on your browser. I think after a free trial period, you have to pay for it, although people like RoboForm. I use the free version of you could try here Lastpass, and I recommend it for those of you who use Internet Explorer or Firefox. That will generate passwords for you; then you use one master password to log in.
Exclude pages - This plugin adds a checkbox,"include this page in menus", which can be checked by default. If you uncheck it, the page will not appear in any listings of pages (which contains, and is usually limited to, your page navigation menus).
You can extend the plugin features with premium plugins like: Amazon S3 plugin, Members only plugin, DropShop etc.. I think this plugin is a good option and you can use it.
Oh . And by Related Site the way, I talked about plugins. Make sure it's a secure one, when you get a new YOURURL.com plugin. Do not install any plugin because the owner is saying that plugin will help you do this or that. Use perhaps, or a test blog to look at the plugin get a software engineer to examine it. This way isn't a threat for your business or you.