It depends on how big of an operation you are planning to build. You can start small with a cheap reseller account, or you could go big and buy lot of computer hardware. If you are new to the industry, it would be a good idea to start small. Get a reseller account and focus on marketing. Pick a niche to focus your efforts on.
It all depends on how you want to jump into the business. If you know nothing about hosting or running a hosting business then check out the running a hosting business forum. Things you need are a server or reseller account, a domain and a billing script for example WHMcs. You can advertise in the offers forum. You'll also need a template for yourself and you can pretty much supy support through email and use a free live chat software.
Goodluck and feel free to reply with any questions.
Many people start out with a reseller account from a vendor here on WHT. This is the least-risk way to get started. As you build the business, you can invest in bigger and more robust hardware until you are leasing your own racks and building your own datacenters. Baby steps..
Alright I don't know what your budget is but I suggest you look at companies like hostgator where they include a free billing script and other good addict along with top of the line services. Hostgator can provide you with a great plan for around $30 a month with a free copy of web hosting book and whmcs with tons of templates and much more.
If you are looking to get serious about starting a hosting company, I think number 1 priority (besides servers) is 24/7 live support. The cost of starting a web hosting company is not worth it unless you are going to go all out and do it right. Reseller hosting is always an option though. Good luck
Do you have any background in the web hosting industry or working with servers? This is a must these days in order to provide your clients with the best support possible. Poor support will result in your clients leaving you.
█ NewYorkCityServers.com - The Servers That Never Sleep
█ Enterprise Dedicated Servers In The Heart of Manhattan | View Our Low Latency Network!
█ Best Prices in NYC Guaranteed | 24x7x365 Support | Less Than 15 Minute Support Replies
█ Nick Esposito | nick @ newyorkcityservers . com | +1.855.687.6927