If you are a plumber, you will fix your own leaking faucet; if you are a mechanic, you will change your own oil; if you are a doctor, you will give yourself some nice prescription; if you are a lawyer, you will sue your neighbor's pants off; if you are a teacher, you will teach your children; if you are a software engineer, you will ....

.. set up a home network, use a good router, install Linux on your kids computers, help them build their own web sites, introduce them to C++, show them how to use Google..

You may find your own training useless outside of your job, but .. respectfully, I have to disagree.