how to buy a laptop

so i don't really know much about technology and which hard drive is compatible with whatever but when purchasing a laptop for college, there were a few things i wanted. Firstly it needed to be light so i could carry it around. I wanted it to look nice and have wifi. I went up to power city where a lovely gentleman showed me a few and gave me some information. In the end i went for a mini dell one. it is pink. it cant take cds but i dont really need cds anyway. I then needed to buy powerpoint so i could download some of the lecture notes to study with. My mini laptop might not have all the bells ad whistles but it has a nice web cam and other things. I didnt need that much space because all i really download is music. (I dont know what else to say...)