The following image is called a 'Pigpen Code' (also sometimes called the Freemason's or Rosicrician cipher). It's easy to use once you know how. Each letter is represented by the part of the 'pigpen' that surrounds it. 

Take a look at this example for the words "hello world":

Get a pen paper and try and decode what the following mean by using the Pigpen Code image.

Using the Pigpen Code can you work out what this means?

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Using the Pigpen Code can you work out what this means?

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Using the Pigpen Code can you work out what this means?

see answer

Using the Pigpen Code can you work out what this means?

see answer