About Test23

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24-hour cancellation

Reschedule for free, if you cancel 24 hours or earlier only.

Weather cancellation

Refunds are offered due to adverse weather.

Meet the Instructor

I've been programming for over a decade, worked in industry for several years, built and launched software products. I love to learn and teach others how things work by diving deep into the internals of systems.

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Sage Holz profile picture

Sage Holz

Programming Tutor

Where to find Test23