There are so many ways to make a selection in Photoshop that one might  need to make several tutorials, i`m not going to do that. In a sense we can use different techniques for different situations: for a quick selection my favorite is the quick selection tool and than i add or subtract from it with the lasso tool. For the most exact selection i use the pen tool to create a path and than transform it to a selection.

For delicate selections i tend to use the channels, especially for hair, and that is our example today.