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Git From First Principles -- it is just a content-addressable filesystem
Two hours. We rebuild Git from scratch: blobs, trees, commits, refs. By the end you will stop being scared of rebase and merge and know what a detached HEAD actually is.
Kernel Patch Review -- free, and I promise to be kind
Email me your kernel patch. I will review it. I owe the community this one. You get honest feedback. Free. You do not even have to say thank you. But it will be kind -- that is the deal I made in 2018 and I am keeping it.
Paul Sellers Hand Plane (no power tools allowed)
No, it is not a power tool. It is a Stanley #4 bench plane that has made three dining tables. Paul Sellers convinced me that quiet work is better. Sharpening whetstone included. I will show you how to rock the plane on pickup.
QEMU Emulator Tour -- How I Emulated x86 in C
One session. The dynamic translator, the TCG, the device model, the memory map. After this you will know how VMs actually work, not just how to run one.
Scaling a Messenger to 450M Users with 50 Engineers
One-hour talk. What we did. What we did NOT do (hint: most of it). Erlang decisions, database decisions, the sticky note. Also: how I said no to ads for five years.
The Original No Ads Sticky Note (framed)
The literal sticky note. Yellow, faded, my handwriting. "No Ads. No Games. No Gimmicks." Framed in a simple black frame. Borrowable for a week so you can put it on your own desk and remember.
Women's Self-Defense Course -- 4 weeks, Enna
Four 90-minute sessions designed for women, by a boxer who has spent 12 years learning what strikes land and what does not. Practical, repeatable moves you can use in the street, in the carpark, in the elevator. No ego, no tough-guy nonsense. Small group (max 8). You will leave able to defend yourself from the most common grabs and attacks -- and knowing when to run, when to shout, and when to fight.
Raffle: Free seat in the Women's Self-Defense Course
One lucky winner gets the full 4-week Women's Self-Defense Course, free. EUR 0.50 per ticket, 20 tickets total, draw in 10 days. Every euro goes toward more free seats for young women in Enna. No platform fees, no cuts.
Talk at your school -- donation only
I will come to your school for an hour. Stories, slides, questions. No fee. A donation to mountain rescue is appreciated. EU and UK only, you pay travel.
Free "Is this for you?" session + gum shield -- first 20 kids
One hour free. I'll teach you the basics and give you a gum shield to keep. For kids 12-17 from Enna and nearby. Text me through La Piazza.
Boxing Pad & Glove Kit -- rent by the hour
Pair of focus mitts, 14oz gloves, hand wraps. Everything cleaned after each use. Rent by the hour for home sessions or a friend.
Private Boxing Coaching -- 1-on-1
One hour of proper technique. Stance, footwork, combinations, defense. For adults of any level, kids by arrangement. Enna area.
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