I setup a Patreon page and a Paypal link, just in case you feel like buying me a coffee or beer (or both).
I'm currently VFX Lead in residence teaching a masters degree in VFX at the University of Technology Sydney. Before that I was supervising and doing VR/FX/Lighting at Animal Logic for a long time, and before that busy in the commercial scene in London for many years.
Over all that time I've kept tips and tricks about all the CG software I've used. Rather than keep it in a paper notebook I've always kept it online in a wiki. Today the wiki is mostly Houdini notes, but there's bits of Maya, Nuke, Python, other stuff to find. While I've tried to keep it organised, the site really is a notebook, so you'll find things scribbled in the margins, sketches of ideas, shopping lists etc.
It's not a manual, it's not official software documentation, quality varies depending on my stress levels at the time of writing. Hopefully most of it is interesting and/or useful.
I used to keep a list of changes here, but it quickly got out of date. Do you have a table of contents for your notebook? No, me neither. The menu's at the top are the best way to navigate around, also keep an eye on my twitter feed, that's usually where I post links to new things I write:
Hope you find the site useful!