A friend told me to read the Bosch series first, which I did, and then jumping into 'The Lincoln Lawyer' felt like meeting an old friend's rival. It adds a layer of dramatic irony because you know Harry's side of things. If you have the time, starting with the early Bosch novels like 'The Black Echo' gives you a richer sense of the LA Connelly is building. Then when Mickey rolls in, you understand the ecosystem he's operating in, cops and all.
The audiobook versions are a whole vibe. Peter Giles's narration is so laid-back and confident, perfect for Haller's character. I listened to them all on my commute over a few months, in order. It felt like following a long, addictive podcast series. The consistency of the voice from one book to the next really glued the experience together. Highly recommend that format if you're an audio person.