One thing to keep in mind with Calgary is that with the grid system, avenues can be North or South, and streets can be East or West. To make it especially confusing, they put centre street/ave right in the middle of downtown. Just keep that in mind when figuring out where shit is, because it might seem like something is a block away from your hotel when it's actually in the NW quadrant and not the SW quadrant (where your hotel likely is). You'll probably only be in the SW and SE quadrants during your visit.