What struck me the most is going with the old and tried tools (PHP+MySQL). Nowadays everyone - myself included - is trying to have an excuse to try the sexiest JS framework of the day and most of us fail miserably to deliver anything useful - because of lack of experience or just reinventing the wheel altogether. Old and boring is still sometimes the best.
For example, my day job I work with Android all day long. But as a side project, I wanted to make a small mobile game as a invitation for my wedding. So I loaded up Phaser.io and wrote some really easy Javascript. I had a working, playable game that night. To be fair, it's a really great framework. But I think choosing a framework that fits your needs at hand is much more crucial than which language or database you use.