If it is your first time using a sewing pattern, there are several options online for learning to make your first garments. There are many options. I like Mimi G's tutorials and Craftsy classes, but for those on a more restricted budget, I would suggest buying big four patterns when they get close to a dollar and watching Professor Pincushion. Below, I have listed all of the patterns for which she has tutorials:
Kwik Sew Patterns
Here is the link to her YouTube channel as well: http://m.youtube.com/user/ProfessorPincushion?desktop_uri=%2Fuser%2FProfessorPincushion
You gotta love this lady!