The Sakura top pattern is written in English only using US terminology. Its an advanced beginner pattern but there are detailed steps and photos throughout so beginners are welcome to try.
The pattern is a made to measure and size inclusive design, this means you take your own measurements as instructed in the pattern, this means it can be made for any size and age.
You will need any type of DK weight yarn, you can use any fibre, however I do recommend cotton for a nice soft and summer feel.
I used roughly 500m of yarn for the sample size (UK 8). You will also need a 3.5mm crochet hook.