You just bought Nexus 4 and you don't know anything about Android operating system, so I will guide you through literally first steps on this great phone.
You add a hashtag to your uploaded Instagram pictures but when you click the hashtag your picture doesn't show up there? Yes I know, it's pretty frustrating, but I happen to know how to fix this!
If you need, besides major accounts, an extra account with limited access to data, you can add Windows 8 Guest account. The process is almost the same as in Windows 7.
In this day of age, it's very practical to have a Windows 7 installation on your USB key, for many netbooks and devices don't come with CD/DVD drives anymore.
Google Chrome has a handy function where you can just paste an url or search term and you will go straight to the page or get the Google search results.