You probably already have a camera that you can start experimenting with. Read this post to check it out.
Take a look at some of the issues I experienced when I started out
Here's a loooong post, but it should contain a lot of useful information if you're looking for a bare-bones setup.
Take this as a few words of advice from someone who has been through all of this. It's not gospel, but it's a method and attitude that works for me in getting what I need.
It's a good idea when you're just starting out to write down your setup steps and use it as a checklist.
This was my first attempt at a Deep Space Object. You might be able to make out that it's M42, the Great Orion Nebula... the core of it at least.