To agree and to disagree

I love roller skating.
-> So do I. / Really? I don't like it at all.
I can play the guitar.
-> I can too. / Can you? I can't play at all.
I failed my driving test.
-> Me too. / That's too bad! I passed mine.

I didn't eat breakfast this morning
-> Neither did I. / Really? I had some rice.
I'm not a basketball fan.
-> I'm not either. / You're not? I love it!
I can't use a computer.
-> Me neither. / You're kidding! I'll teach you!