Vostro 3546, upgrading the RAM

Hello, I am in need of some help and opinion on upgrading a Laptop RAM. As I have mentioned in the subject column, I have a Dell Vostro 3546 laptop with 4GBs of RAM. I am thinking of upgrading my RAM to atleast 8GBs. Frankly, I dont have much idea about upgrading Laptop components. In fact, I was unaware of the fact that Laptop RAMs can actually be upgraded. However, as I have checked a few websites and researched online a bit about Laptop components and stuff, I feel if there's a possibility to upgrade my RAM, I would like to go for it. 

I want to know if the laptop I have has that option, if yes, then is there a specific type or model of RAM that will be valid for my laptop. Also, if there's any idea about any complications if I change my RAM. 

Any kind of relevant information will be appreciated. Thanks.