The second trick to this is that you can set up all your tabs to open at once when you start your browser. To set that up, open your browser and get to a page that you use all the time, like your email. Then open a new tab and use it to go to another place you use all the time, like facebook. Repeat this until you have tabs open for all the pages you always use. Now go to your settings (mine are tools>internet options) and where you set your homepage(s) click on "use current". It will save all the tabs that are open as your home page. Now everytime you open your browser you will open all your favorite tabs at once and you can easily click between them as you need them.
Now, back to my desktop tour. Like I said, I'm a Google user, but this could easily work with Microsoft or any other cloud platform. I set up my browser so that eight tabs open at once when I start it. The first tab is my Google home page, called igoogle. The second tab is my Gmail (email). The third tab is my Google calendar. The fourth tab is my Google Documents, where I keep spreadsheets and other business related documents. The fifth tab is my Google Reader, which allows me to subscribe to web pages and receive the newest articles as they are published (I don't have to go looking, they come to me). The sixth tab is my facebook, the seventh tab is my Google voice page and the eighth tab is a web site called Evernote.
A little bit about some of these tabs.