There are hundreds of articles on this site, and thousands on the rest of the web, to give you more detail than you could ever read. Start with this How-To Guide for Raising Money for Your Business. For real-world advice from actual people, find your nearest Small Business Development Center, and make an appointment to speak to the local experts there who can advise you on a one-to-one basis.
Tim Berry is the chairman of Eugene, Ore.-Palo Alto Software, which produces business-planning software. He founded Bplans.com and wrote The Plan-As-You-Go Business Plan, published by Entrepreneur Press. Berry is also a co-founder of HavePresence.com, a leader in a local angel-investment group and a judge of international business-plan competitions.