While the Suzuki repertoire is likely to be very useful to an adult, the Method is intended for children and should not be used for an adult without significant adaptation.
Should I learn via the Suzuki Method?
How do I get a cheap violin?
You should rent until you've saved up to get something higher-quality. Beware of "bargains" on Amazon or eBay.
How quickly do adult starters learn?
Most people who start in their teens or later can reach an intermediate level in two to five years (with daily practice and a good teacher).
Opportunities for adult beginners
Taking up (or returning to) the violin as an adult doesn't mean just playing for yourself or your friends and family. There are opportunities to play with other people, and those opportunities will expand as you reach the intermediate level.
Violin for the Love of It 