You need only comfortable training clothes and socks. No shoes.
Mats and stools are available in the studio.

Yes, you can join anytime but you need to register: ase@goooal.ch
In the beginning you will need time to get to know the sequences. With time, as you become more familiar with the process, you can pay more attention to the inner connections and details. It takes a little perseverance in the beginning. Take the time. It is worth it!