You can find some good(ish) books on postgraduate research skills at most book shops and on Amazon. Some of them are specialised so you might find one for your particular field. If you're still at a loss, then speak to the postgraduate course director at the department where you're doing your MA. They are there to offer guidance on all aspects of your academic progress, including research skills. Most (though not all) MA degrees will also include one module on research skills; try and find out whether yours will be offering this.