You'll find that snakes have their individual personalities; some are very friendly, some aren't so friendly. However, your snake is new and most probably a hatchling so it needs time to get used to its surroundings before being handled. Hatchlings can be evil little buggers and bite away at you when you open their enclosure. Just be patient and I'm pretty sure it'll calm down a bit.
When handling, wash your hands and lay one hand on the bottom of the enclosure. The snake might come and explore and, when it has gotten used to you, you can gently pick it up.