More and more developers are interested by my book, which is great! Many people wrote to me to share what they expect from it, giving me even more ideas. I write back to them personally each time. Some of them even proposed their help for proofreading it, that's so awesome.
For now most of the subscribers come from my blog, which has more and more success too (~30 000 visitors in December 2020). At the same time, I've decided to tweet everyday (via an automation tool I've built myself for my needs) and see how it goes.
Looking forward to see where this adventure will lead me.