This article promise syntactic familiarity with Rust in 30 minutes but metrics suggest 51 minutes will be required. Unsure, I round up. post 
In order to increase fluency in a programming language, one has to read a lot of it. But how can you read a lot of it if you don't know what it means? In this article, instead of focusing on one or two concepts, I'll try to go through as many Rust snippets as I can, and explain what the keywords and symbols they contain mean.
$$('.language-tag').length 146
How many? Chrome inspector says 146 snippets or about 30 seconds per example using my one hour allocation.