Here’s a good video by mycodeschool explaining the nitty-gritty of finding time complexity quickly for your code:
The WordPress.com stats helper monkeys prepared a 2015 annual report for my blog.
Here’s an excerpt:
A San Francisco cable car holds 60 people. This blog was viewed about 2,300 times in 2015. If it were a cable car, it would take about 38 trips to carry that many people.