Welcome aboard! It's okay to think you are a newbie. Most artists are in a perpetual state of not liking their work because they always see something they can improve on, no matter how experienced they are.
Try to practice often. Practicing little but often is way better than practicing a lot but not often. Improvement is never immediate. You will see the difference in the quality of your drawings after several weeks or months, so don't throw them away.
It really helps to have someone look at your work from time to time. I have a room mate who has more experience in drawing than I do. It was extremely uncomfortable, to say the least, to show my room mate my drawings from 4 years ago up to the present, but it was important in building confidence. I have had a history of being very insecure of my work, and only recently have I been able to comfortably draw while riding the bus or in any public space.