A lot of your day as a voiceover is spent talking but you need to do lots of learning, there so many books out there that you can read.
There’s “ voice over” which I’ve been reading recently by Jeff Lupitin. Now this book goes for a range of different topics about how to get started up front, your voice. Jeff gives so many good tips and hints of how to read a script how to break it down and how to pull on the emotions. It is a really helpful, concise book, straightforward with no messing about.