Hello Guys! How can i start to learn grasshopper?

Hello guys, i’ve followed a lot of videos abouth grassopper and i think is a great way to model!
Do you have some advice about how can i learn grasshopper starting from zero?
Do you know some books, videos and so on?
Thank you a lot guys, i’ll wait for your answers !

If you have some understanding in Modelling (Rhino of others softwares) and if you have some parametric design to do it is good to dive in Grasshopper. I began like that because I had to do railing and propellers for boat. For sure there are tricks, not easy things, … but Grasshopper is a Piece of Software. Explore the interface, plugs components …