I'm not affiliated with humblebundle in any way, and this was a genuine question. I know that the packt books are not best quality, but if one these books is a good introduction to practical ML, I would consider it a good deal. In my opinion much better than googling algorithms and tutorials and visiting 10s or 100s of sites full of ads and ad trackers to find a suitable algorithm for a given problem. Reading an EPUB on my daily commute sounds much better and works offline.