Definitely a movie worth watching. It shows a small window of the life of 15 year old Oliver Tate, who struggles with everyday issues like girls and parents breaking up. It's a coming of age story, only in a more quirky/funny way, unlike the way you or I experienced it (only because I doubt that Richard Ayoade wrote the script to your life).
This movie is also extremely visually pleasing with a simple colour template and uses the romantic super 8 film, implementing a clever technique so as not to be cliche or trendy. This along with a soundtrack by Alex Turner (Arctic Monkeys) makes it a charming film that is definitely a must see.