Hey grizly,
Its easy to get started in this business however its hard to establish and grow, we've been around since 2003 and i can happily say we've got a solid business however you need to do your research, run the numbers and if you're starting off with a reseller account check reviews of all the hosts your considering going with, google is your best friend! There are many 'how to' guides on the net and also forums such as
www.webshostingtalk.com which hold invaluable information for the beginner.
Best of luck with it!