I want to improve my ruby skills with some tests running for me.

If you want to use another language, exercism has a lot of languages then you can use it and share it with us in the comments.

So, this is the exercism.io page, it has a CLI and it is so helpful, on three steps you can finished the exercise.

1.- Download exercise

exercism download --exercise=acronym --track=ruby

2.- Solve

Use your code editor to solve the problem locally.

3.- Submit

exercism submit /path/to/file

BTW...It's possible to submit an incomplete solution so you can see how others have completed the exercise.

if anybody knows how I can create sequence posts? please help me!
UPDATE: I found how to use it, just add series: Serie's name into frontmatter above

So, I expect it will be helpful for you!