Hi! How do you intonate an acoustic guitare?
It is all about getting it set up properly. You can do it yourself, with online guides and stuff, just google it. However, if you had to ask how to do it, then chances are you are going to want to take it to a shop and get a professional to do it. It generally is pretty cheap to get done, and it will sound better if done by someone with experience. Any guitar shop will be able to set it up for you.
With difficulty, if it's got a "normal" acoustic bridge anyway. This seems to sum things up nicely, stolen from Google. As you can see, most of it's probably best done by a professional.