Create a Netflix account at Netflix.com. If you already have a Netflix account, ensure that you have selected a streaming plan. You can change your plan at any time by accessing your Netflix account.
Connect to the Internet wirelessly or through broadband cable with the device of your choice. As of March 2011, Netflix supports computers, Xbox 360, PlayStation 3, Nintendo Wii, iPhone, iPad, Windows 7 phone, certain Blu-ray players, HD TVs and streaming devices. Some devices, such as Xbox 360, require an external adapter to connect wirelessly.
Install Netflix on the device. You do not need to download Netflix for a computer, but most other devices require some sort of setup. You can find the setup instructions either on the Netflix website or the manual that came with your device. After the installation is complete, you can begin streaming movies.