How important is the study of the Typescript version 1.8 in 2019?

My company gave me access to the Pluralsight website. And it is the main source for video courses. Other sources that I could use as the platform for learning - a condition of the customer.

The first topic to study is Typescript. An important condition for the search: elementary level. I found two suitable course, "TypeScript Fundamentals" (Updated 25 Mar 2016; Typescript 1.8) and "Getting Started with TypeScript" (Updated May 18, 2017; Typescript 2.2). The first course has far more reviews, but the overall rating both maximum. The current version of Typescript 3.4. I saw a pretty big list of changes from the Typescript version 1.8 to version 3.4. I am afraid that many things I learn from the course will actually be outdated and I will not be able to use it in a real project.

Thus my question - how relevant would be my knowledge of Typescript 1.8 now? Or are the differences really are not significant and this knowledge is enough for me to get a base?
March 23rd 20 at 18:54
2 answers
March 23rd 20 at 18:56
It is better to learn the latest version of TypeScript.

View What's newin order of release of new versions.

If you are willing to write on more "disciplined" JavaScript.
If you plan to develop with Angular.

TypeScript relevant. He recently started his mastering and use delivers greater UDOVOLSTVIE in the development rather than pure JS, which is disgusting. The output is still the same JS (it compiles tsc), but thanks to strong typing eliminates a large number of errors at the coding stage (which will not compile when Mesopotamia types (except any)).
March 23rd 20 at 18:58
Examine the documentation. This is more than enough.

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