At the top of the page there are videos. At the point you are now you just start knitting. Don't worry about loose stitches or anything. Just keep going. The tension will come with practice.
Use the continental video if you going to hold the working yarn in your left hand. Use the english video if you are going to use your right hand.
Here's more help here.
http://community.knitpicks.com/notes/How_to_Knit