Originally Posted by Eastbay1K

Hills - it will be hot. The funicular up Cerro San Cristobal is nice, and better than climbing on a hot day. A very white stone virgin will greet you. A lot more humble than the Rio statue at the top of its famous hill.
Metro - easy. You'll need a card, as I think all paper ticket fares went away within the past year.
Taxis - more difficult without Spanish.
Uber - fine - but if you use to/from Airport, they aren't authorized to operate there so you may have bizarre pick up and/or drop off points - not recommended if you're not familiar with the airport (especially with major construction).
Spanish crash course - save your dough. My dear huevón, I just hope you don't have a screaming guagua on your flight, and that you enjoy your ave palta sandwich con un schop.