Plan my trip to Rio

I bookeed everything well in advance as Rio Carnivals seem to be something crowds of people want to enjoy. Although, to my shame I still haven't found the time to fully plan my trip to Rio. I bought tickets to some major events that I was sure on visiting but apart from this, I still really don't know what else to do. I'm flying to Rio next week and by that time I'll have to have everything well thought of.