There are many ways to hold knitting needles. Firstly, both the needles that are the left and the right ones should be held as if you are holding a knife, while the tips of the needles are pointing towards each other. Hold the yarn in your right hand and then pass it between the third finger and the fifth finger. After doing that, wind the yarn over the ring finger, under the middle finger, and over the index finger. This will help you get hold of the yarn properly, and after a while, this will feel like second nature to you.