There are lots of different ways to approach this depending on what your goals are and how you want to work.
There is a sticky post in the Newbies forum that outlines some basic questions that need to be considered. Take a look at it, and think about what you want to do and how.
FWIW, I use a mixer AND the computer, and it makes for a very efficient setup. I LIKE knobs and faders...... 8)