There are many websites that allow users to watch and enjoy full series online for no charge, including watch-series-tv.to, yidio.com and couchtuner.eu. Other websites, such as Netflix and Hulu, allow you to watch series online for a monthly fee.
Websites that allow you to watch full series online for free are popular, but sites that offer such services are often filled with extensive advertisements. In order to fix this problem, some users install programs such as AdBlocker Plus, which is an add-on to Chrome or Safari that prevents the advertisements from playing.
Services such as Netflix and Hulu that charge for watching TV series are generally considered more reliable and have few, if any, advertisements.