Learn how to Fish and Cook

Go to a trainer and learn the basics. Once your done with the basic learning, open your ability book. The ability you learned should be there. Drag the ability to your action bar. Once there, click on it and it will probably say what kind of items you need or where to go. You must have the correct weapons to do this. For fishing you will need a Fishing Rod; and for Mining you will need a Mining Pick. From there, once you reach a certain level in your abilities you can upgrade your weapons.