Dear Belen,
Thanks for your interest in LSP. If you really have no other option than to read a book, I would suggest that you start with “Building a Better Business Using the Lego Serious Play Method” by Per Kristiansen and Robert Rasmussen. However, I personally don’t think that two-dimensional text can do justice to an interactive multi-sensorial collaboration methodology such as LEGO SERIOUS PLAY.
I don’t know if you have already seen the video clip by Pere Juárez Vives, who is a professor of Creativity, Entrepreneurship & Innovation at Universitat de Barcelona on LSP and Design Thinking https://youtu.be/KUJhKngeWAo
Another person from Barcelona who has been around the LSP community for a while is Ricard Huguet. It might be interesting for you to meet up with Ricard or Pere to get a deeper understanding of what LSP is and what it isn’t.
If you want to become a certified facilitator, you should be aware that since LSP went Open Source there is no longer any “official” certification path. The authors of the aforementioned book both train globally in English. Others offer training in other languages, but to my knowledge there is no longer any formal accreditation of trainers.
Once you have attended a 4-day facilitation training course, there are other books that you might be interested in acquiring to support your facilitation activities. One of these is “Serious Work. How to Facilitate Meetings & Workshops Using the LEGO® Serious Play® method” by Sean Blair and Marko Rillo.
I hope this gives you enough pointers to get started. Enjoy your new LSP universe and welcome to the community.
All the best,
Eli