There are many ways of approaching some extra money from the internet and whatever you like doing there is something for everyone. If you just want to try a basic search for work then just type in "Get paid to" followed by whatever you are interested in such as surveys, pictures, listening to music. This will bring up a number of sites. Once you've found some names then do another quick search to find out what other people are saying about them before signing up.
Paid article sites are becoming one of the most popular ways to earn some extra money with new sites coming online all the time. You could try Helium, Triond, Associated Content or Constance Content for a start. They all have different payout levels, some from just 50 cents and right up to $ 25.
You may also like to try paid survey sites although you should not part with cash to pay for survey directories as this information is freely available online and do not be fooled by claims that you can earn small fortunes every month. Some companies rarely send surveys, others send them everyday but you might not have the right profile. Try the Lightspeed Panel, IPSOS, who give you points even if you do not qualify for the full survey, Valued Opinions or Palm Research.
Paid transcription work is also readily available on the Internet. The work is usually pretty well paid but you will need a pretty fast typing speed and some transcription equipment. A good way to start with this kind of work and to gain experience may be to try Mechanical Turk who offer smaller pieces of transcription work.
Get paid to listen to music is also another option. You might like to try Slice the Pie, one of the best ones around. Promo Squad is also a good choice or you could try Country Hit Songs. Some pay cash whilst others other points which are exchangeable for prizes.
There is just a few ideas to get started earning some extra money every month just for some extra time spent online.