Flies get a pretty raw deal when it comes to reputation.
They get swatted, sprayed and are used as the bad guys in many repellent commercials.
In reality flies are really cool. They help to pollinate flowers, clean up waste, and are a great food source for many animals.
Best of all, flies are great to shoot. They have big eyes, amazing colours and really interesting faces that would make an awesome Halloween costume.
At the end of the day flies are really quite tolerant of big lenses being stuck in their faces which makes them perfect for learning macro photography.
Put out some organic plant fertilizer and pretty soon you will have an array of subjects to shoot.