The article should start with the prerequisites, things like an university degree and some work experience will make your job hunt easier and in many cases it will be impossible to get an European job with relocation without these two things.

I, for example, have been trying to get a job in many of the startups in Amsterdam and Berlin for the past 3 months and it has been impossible due to my lack of formal education, or better, due to the lack of university degree. And to add salt to the wound, the education system in my home country forces you to pass +5 years studying just to get a Bachelors while you can get a BS in ~3 years in the EU and use the other 2 years to get a Masters (as in the US), so even if I had finished university I wouldn't be able to compete with the education of engineers that are already living in Europe. More than once my profile has been rejected by European companies because they can find someone as good (or more) than me without the need to initiate an immigration process.

Nonetheless, I will try every single website linked in this article because I hope than maybe one of these days I will get hired for work experience and skills than for my education. I haven't found a job in Europe for lack of trying.