I agree with all of above. But at some point you have to dive in. You first need to decide how serious you are, which will help determine the cost of your gear. I started from scratch right after I retired in 2010. I did a bunch of research and decided to go with ProTools (7 at the time, I've since upgraded to 12) because it seemed to be the industry standard. It is not inexpensive, however, so you may find something cheaper that will fit your needs. I looked at my computer equipment and started with a Windows PC, but have since migrated to an Apple MacBook Pro. You will need an interface, I began with an MAudio and have now migrated to a Focusrite Scarlett 2i/4 (the MAudio quit working after a PT upgrade). You will need a couple of microphones (+ stands & cables). I bought a set of very reasonably priced MXL mics that I am very happy with despite the low cost. There are so many choices that I suggest you start with something like the MXLs and then upgrade if/when you feel it's necessary. You will need a good set of headphones and a set of monitors. I currently use Sennheiser HD 280 Pro headphones and MAudio Studiophile BX5 monitors.
This is what I did, and I'm not saying it will work for you or anyone else, but since you asked... As a point of reference, I write/record Americana music. If you want to hear a couple of songs go to soundclick.com/dalejtweden
Good luck