First, as raincom mentioned, an expanding battery is a major concern. I'd recommend putting it somewhere fireproof immediately (such as in a metal trash can, or on a concrete pad), and making a plan to have the battery removed and properly disposed of in the near future.
Running the battery down to below 30% might also be a good idea, but only after it's somewhere fireproof.
To answer your question, though, I've learned from iFixit guides, youtube videos, just taking things apart and tinkering with them, etc. Apple uses some oddball screws sometimes, but you can get a toolkit with everything you need for $30 or less.
I'm more of a software guy, but I mess with hardware occasionally. (I'm also willing to pay a professional if I feel like it's over my head.)
Running the battery down to below 30% might also be a good idea, but only after it's somewhere fireproof.
Edit: here's some more info: https://www.reddit.com/r/spicypillows/comments/gebotv/faq_wh...
To answer your question, though, I've learned from iFixit guides, youtube videos, just taking things apart and tinkering with them, etc. Apple uses some oddball screws sometimes, but you can get a toolkit with everything you need for $30 or less.
I'm more of a software guy, but I mess with hardware occasionally. (I'm also willing to pay a professional if I feel like it's over my head.)