Everyday Miracles is right. You really want to generate traffic from outside HubPages if you want to see some high numbers. That being said there are a few ways to promote from within.
*Status Updates allow you to post link but letters are limited and it only goes to people who follow you.
*Link hubs that are related with both the "group" toolbar feature and also creating links within the article.
*Comment on other people's Hubs/Questions but DO NOT put links to your articles in the comment section. You can mention them if they are relevant but I find when people put links it is more self promotion than a serious comment. (Questions can have links if it directly answers what is being asked)
*Ask questions yourself. I find that asking questions gets more people to my hubs who might not normally follow my subjects.
HubPages is about writing and community. They do a good job of discouraging people form straight out self promoting within their site. Be an active member and people will read, follow, and comment on your work.