I've been very pleased with the range and quality of material offered by 5DayDeal. I've participated in two of the bundles and while everything isn't exactly what I need, I've been introduced to a range of lecturers and training opportunities that I might not have otherwise encountered. 5DayDeal is a great mix of tasters and deep dive experiences for learning packaged as both video and ebooks that will meet a range of tastes in the subject matter profile you've chosen.