Hulu is all better out than netflix, in my opinion. I love watching the anime selection that Hulu has. I would watch Hulu all day, if someone lets me lol.
Youtube is a great place to create videos and upload them. You can also watch movies and anime shows on youtube. If you are a gamer you can find videos that will help you if you get stuck.
Wikipedia is never true if it words, however if you are doing a research project it great use to get you started for that research paper however I wouldn't end my research with it.
Spotify is a great way to listen to music on the the lap top , iPad and on the phone. Also you can create your own play list music that u like. It has many varieties of music. I use Spotify more than any other music app out there.
You can shop mostly for anything on Amazon now. It a great website to buy things that your not able to find any where.
Facebook is the website that helps you stay connected to people. Mostly everything is done by facebook. Its a great app but also have ads and spans happening on facebook. So just be careful