Getting this wrong will not be a learning experience, because it will kill you. This is an incredibly dangerous thing to do and should only be done by people who already know what they're doing.
That's not just a tangential tidbit -- you don't learn well when you are completely out of your depth. You learn well when you are right at the edge of your ability and understanding. That involves risk of failure, but the failure isn't the important part, operating on the boundary is.
Yes, disassembling and tinkering with microwave is almost the only easily available thing I would not recommend at all because it seems so ordinary but actual danger is way too high and hidden. Even if you know exactly the dangers, it takes only one distracted move, just being tired or too complacent to end really badly. Like even some medium time disconnected and expectedly safe units can have real nasty shock in them when discharge resistor is faulty, that failure mode does not usually kill but not recommended.
Getting this wrong will not be a learning experience, because it will kill you. This is an incredibly dangerous thing to do and should only be done by people who already know what they're doing.
That's not just a tangential tidbit -- you don't learn well when you are completely out of your depth. You learn well when you are right at the edge of your ability and understanding. That involves risk of failure, but the failure isn't the important part, operating on the boundary is.