How many sense-groups are there in sentence (2)?

(1)   

Good afternoon everyone and thank

you for coming. (2) I’m going to talk to you today about one of my hobbies,

baking. (3) I’ve loved baking since I was a child. (4) My grandmother taught me

to make simple biscuits and cakes, and later, when I was a teenager, I watched

a lot of TV programmes and online videos to learn how to make more complicated

ones. (5) What I like about baking is that’s it’s very creative and it makes

other people happy.