MageStackDay is an online hackathon dedicated to answering questions on magento.stackexchange.com & Magento community forum. It's all about getting together online and enjoying the best thing about Magento: community!
Database diagram of Magento CE 2.1.3: http://anna.voelkl.at/magento-ce-2-1-3-database-diagram/
How not to suck at data validation and output: Security is an important aspect of web application development. In this talk we’ll have a look on methods and ways Magento 1 and 2 provide to increase security.
Inofficial Magento 2 Roadmap with upcoming features
Database diagram of a fresh CE 188.8.131.52 installation