@Anna10- Baby broccoli (also called broccolini) tastes like regular broccoli, but sweeter and milder. Some people think it tastes like a cross between broccoli and asparagus, but I don't think so.
I love it raw. When I make a salad with either broccoli or broccolini, I cut it up fresh, and toss it on top. It's also delicious cooked, especially steamed. When cooked, I find the taste much milder than broccoli.
That's my opinion, but I'm sure other people have a different perspective.