Financial lessons after 10 years in tech

I wrote this post over the weekend that caught on in /r/cscareerquestions (192k views so far) & on Github (539 stars). I'm interested to hear if there are topics members of HN are interested in too. A few of the topics being:

    - Reviewing companies & selecting the right opportunity
    - Salaries, pay raises, and how packages are structured
        - Startups vs big companies
    - Stock options vs RSUs - how they work, exercising them, the tax implications.
    - Bonuses - what to expect and also the tax implications
    - Investing in your retirement (401ks, IRAs, etc)
    - Real estate - renting in these high costs of living areas vs buying
    - Tech investing - becoming an angel investor & VC investing
    - Contract work - how to bill & taxes

Anything else?

I don't see any financial lessons being given here