Ah, no worries. There are sooo many spiders out there, it's difficult to sometimes tell them apart. There are some useful images and help guides available on the web to make it easier to find which spider family a spider belongs to. A great way to tell spider families apart are by how the eyes look (a few images using Google search will pop up for spider eyes). Each family of spiders have different eye arrangements so it's a very accurate way of identifying.