@vitaut @synec
Somebody in my timeline posted a link to "Lean first steps" online book a while back:

https://leanfirststeps.blogspot.com/p/contents.html?m=1

I saved the link, but did not really dig in since then, so I'm not sure how good it is - but I think the person posting the link felt quite proud of what they got there.

#introduction Hi, I am the kind of person who cannot really complete the sentence "Hi, I am..." But, I have:
background in #mathematics , interest in #opensource , some experience working in quantitative finance (as a quant) and at a large software corporation as a "software engineer". My main hobby is #ballroom #dance , but I also like #biking and #volleyball .

Oh, and I run #gentoo by the way.