In Go, problems are called tsumego. Tsumego are used as "practice" by Go players, and are usually designed to improve your ability to read ahead. Try to complete the problems by thinking about them, not just clicking around until you find the solution.
Every problem on this page is Black to play and capture White.
This first problem should be very easy!
Hint: A group needs two eyes to live.
Hint: Read ahead!
Hint: Does the ladder still work?
Hint: Does White have two eyes?
All done! If you were able to solve all of those problems easily, you have an understanding of the basics of Go. If you found any of them a little challenging, don't worry - you will learn very quickly by simply playing.