Celcius is really easy. Remember these factors:
20C is room temperature
100C is the boiling point of water
0C is the freezing point of water
Other than that, you will learn just as quickly metric is better and used more by other countries. In fact I live the the US and 90% of the time I use metric.
Im in Wales which is in Uk and everyone by me uses *C
Bahamas, Jamaica, Belize, the Cayman Islands, Palau, and the US (US Troops have US marked on the gear not USA) all use Fahrenheit.
The scientific world uses metric more often. Learning metric isn't *that* difficult. You're not learning calculus or anything like that..
It's actually harder to think with imperial units. Oh hey, let's try this:
1 1/18" - 1/3" + 24 1/16" = ???
There's so little basis behind the imperial system, that they had to use the Metric system to back it. Essentially we're already using metric. Just actually not using it. Which is just madness.
If the metric system was the force, then the imperials would be on the dark side.