If you'r a fast typer and don't pay much attention to spelling or English isn't your first language? No biggie, you can get a spell checker add-on for Firefox.
Google by far isn't only a search service or an e-mail provider. I will introduce you to their Google Docs service which you can use as your very own office in the cloud.
If you use Google services such as Google Reader, Google Drive, YouTube, Contacts, Google+ Circles, Latitude, Picasa Web Albums and a few more, you can download all of your stuff to your computer.
Most of the annotations popping up while you are watching YouTube videos are really annoying, but there is a really simple on-click way to get rid of them.