Yes, you can. But you need to spend time on the following:

1. Familiarize with leading search engines and directories.
2. Know your web site key phrases, and redesign if required.
3. Take care that the website doesn't get banned, for something that you think is not your fault. (For example, linking between sites excessively with a goal of artificially boosting the link’s popularity may get your website banned).
4. You have time and resources at your hand.
5. Website promotion schedules are not critical, in the sense that you can afford to experiment and learn.