One of the hardest things to do as a guy, is to go down on a girl and provide amazing cunnilingus. In all honesty, it does take some practice and some learning on the different techniques that work amazingly well. But there are certainly some things you can do as a beginner to make her squeal in absolute delight. Let's get started:
1. Warm her up. Do not dive right in, but rather warm things up by kissing, touching and licking. Slowly make your move downtown. Once you are there you want to continue to warm things up, by kissing and licking the thighs and the vagina area. Once you hear that she's getting excited, then you can zero in on the clitoris and go to work.
2. Go gentle with a FLAT tongue. You can experiment later with a firmer, more pointed tongue, but for beginners it's best to use a flat tongue to start with. Girls can be very sensitive and many have stated a firm, pointed tongue can be too harsh. Go gentle and feel her out. If she's sensitive then take it easy and maneuver slowly.
3. Use this Technique. For a good starter technique, simply focus on tongue circles. Just go round and round with your tongue as if you are making circles. This is a basic, but effective technique. Beyond your circle action you can vary the speed, you can go from small circles to occasional larger circles and then back to small, and you can do spiral circles where you start small and gradually go larger, then reverse it. There are many variations you can perform, just pay attention and see how well she responds to the particular circle technique you are performing.