Hi Angela - Welcome!
If you take a look around, you'll find that many answers are on the forum already. Try the search function, or just browse the different areas.
Theatre is a wonderful start. Acting is essential to great
VO work. You might also want to take a bit of improv, or get in with a regular group. Books and
VO classes are another good way to get a feel for the industry.
Some of the product review sections may be of interest. There are books, audio courses, web sites, etc.
... and if you don't find what you need, feel free to ask. Plenty of friendly folks around ;-)
Nice to meet you,
Joe J Thomas
Joe J. Thomas Acting Portfolio