How do I dress my avatar? How do I edit her hair so it doesn't look weird? Thanks
well first, go to the wardrobe and click the 'items' tab at the top of the page. there you can search through items in your wardrobe, as well as things you don't own, and click on them to put them on your avatar. on the left side of the page, under the preview of your avatar, there is a list of things you are wearing; you can click the little 'x' to remove them, or drag the layers around to move items in front of and behind each other.
also at the top of the page there is a tab called 'base' which is where you can change your base features (skin, eyes, nose, mouth). you can also drag these features behind the base layer in the panel on the left if you want to hide them and use an item instead.
to edit your hair, choose the 'hair' tab at the top of the page. you may have to then click a button that says 'back to hair selection' so you can see a list of salon hairs. click on the hair you want and then click on the various color squares to change the colors. keep in mind that these color values are, unfortunately, not saved if you go back to the hair selection and pick a different hair - that is, the new hair will still be in the same color, but the color squares will revert to their default settings, so if you want to adjust the colors further you will have to either manually re-select the colors you want, or you could write down the hex codes so you can copy them over and continue playing around.
if you want to use a wig or hair item instead of a salon hair, there is a button above the hair selection that says 'remove hair'.
If you want to change your hair, you'll need to do so in the "Hair" tab at the top of the page (you'll probably also then need to click the thing that says "back to hair selection" or whatever). Then you can choose any of the available hair styles and pick the colors you want.
If you don't want to use one of the styles in the salon, you can choose the "Bald" option to remove your hair. This will allow you to use one of the wig items that you have in your wardrobe.
[edit]Also just to mention, be sure to click on the "Wear Now" button above your HA when you finish, that will change how it looks on site.