Ask HN: How would you invest in yourself with $10,000
I've decided to set aside a max of $10,000 during this time for personal improvement. My primary background is in distributed systems but I've taught myself large bits of machine learning (at the level of Andrew Ng's classes on youtube - not the coursera stuff) as well. Initially I was thinking of getting my second master's - this time in machine learning but those are more like 30-50,000 and a 1-2 year commitment. I'm learning things like Android/IOS programming right now but those kinds of subjects i tend to pick up quite quickly from the internet and books so i'm not sure if I would pay for classes on those subjects.
I was also thinking of stuff that's not related to computers like taking part of an mba curriculum or taking lessons in public speaking, negotiation, marketing etc. As a 35 year old coder, i'm also thinking about what's next in my career - i like hacking a lot, but I don't know if I should be investing in more management skills/credentials since i'm not sure i'll be able to get a engineering job at 50 (evidence showing otherwise for 50 year olds on HN notwithstanding).
So, I thought i would ask the HN community for ideas - how would you improve yourself with 10,000$ (or less :))and 8 months ?