Are you taking formal voice acting lessons to learn to train to read audiobooks? Or are you teaching yourself via the internet, etc?
I am training over the internet and practicing by recording myself and playing it back.
Do you have a home studio set-up yet? I imagine a full studio with all the gear (microphone, preamp, shockmount, etc) gets costly, so you probably start with simple gear?
No I haven't gotten that far in the process yet.  For now I'm using the basic recording programs on my computer.  It's definitely a challenging process but it allows me to "read" and become very immersed in the material.
Learning to read clearly and setting the right mood with your voice is surely where most the skill is needed; the technology is secondary. - Which author (or book) would you most like to read for an audiobook?