http://positech.co.uk/cliffsblog/, this is a blog from a game developer 10 years older than me who run a one-man-army studio from rural UK. Lot of wisdom in it and contains interesting posts to read.
https://www.redblobgames.com/, this is a blog about A* pathfinding and other gems. The website is from Amit Patel, the original creator of SRE.
htttp://www.gamasutra.com, a website about the business of indie games, contains some nice postmorterms.