Love it. There’s a surprising amount of hackability in espresso machines — reminds me a lot of bicycles as an approachably fun tinkering project.
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Get a book and start experimenting. Plan on re-doing some work.
Maybe find a way to hold the bike without investing in a work stand if you're over thirty. I've done a lot of work on the side of the road while bike touring, but that doesn't hold much appeal these days if I have another choice.
ETA: get a tube of bike grease from Park and a bottle of chain lube (Tri-Flow is fine, and so is everything else). Those'll cover your lubricant needs for years.