Digital Audio Workstation or DAW as most call it
is the program/sequencer you work with during a music production, recording session, mixing and mastering.
There are manny DAW applications out there, some more advanced than others and some much simple then others.
When you start working with music you usually start with the program that you find simple to start using, then advancing in to other more complex programs.
Most producers now a days start with Fruity Loops, Reason or garageband because they have a simple layout and it's easy finding your ways in it, altho they have their limitations that you will want to change when you start advancing your productions.
I think the best way is to try and test until you find the workflow that you find most productive.
When you now are advancing you maybe want to look into more professional DAW's like Logic Pro, Pro Tools, Cubase, Ableton Live, Studion One, Reaper and Reason Record.
Some of these have features others have not, and thats what will shape some parts of your workflow.
If you are missing some features in the main daw most of them have support for a ReWire function that allows you to route a DAW together with other DAW's and have the functions you were missing.
There are no DAW better then other, it's only a tool you learn to work with.
Happy hunting for your perfect DAW.