Yes you could work from home, depends on what you would like your business model to be like.
As far as learning the in's and outs...I don't know much on it myself but I have looked into it a little bit as a potential idea in the future.
Here are some excerpts from e-books, of course I cannot prove the legitimacy of the numbers but they seem reasonably accurate.
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http://www.entrepreneur.com/starting...icle37892.html
Start Up Cost Chart Spectrum is on 3rd page.
There are several pages of excerpt from the e-book, the page links are at the bottom, so make sure you don't miss those.
Some books you can purchase:
search for them on amazon.com
Event Planning Ethics and Etiquette: A Principled Approach to the Business of Special Event Management (Hardcover)
by Judy Allen (Author)
http://www.amazon.com/Event-Planning...1715344&sr=1-1
Marketing Your Event Planning Business: A Creative Approach to Gaining the Competitive Edge (Hardcover) by Judy Allen (Author)
http://www.amazon.com/Marketing-Your...716430&sr=1-12
Time Management for Event Planners: Expert Techniques and Time-Saving Tips for Organizing Your Workload, Prioritizing Your Day, and Taking Control of Your Schedule (Hardcover)
by Judy Allen
Start Your Own Event Planning Business: Your Step by Step Guide to Success (Start Your Own Event Planning) (Paperback)
by Krista Turner
How to Start a Home-Based Event Planning Business (Home-Based Business Series) (Paperback)
by Jill Moran (Author
Event Planning : The Ultimate Guide to Successful Meetings, Corporate Events, Fundraising Galas, Conferences, Conventions, Incentives and Other Special Events (Hardcover)
by Judy Allen
http://www.amazon.com/Event-Planning...1715184&sr=1-1
The Business of Event Planning: Behind-the-Scenes Secrets of Successful Special Events (Hardcover)
by Judy Allen
http://www.amazon.com/Business-Event...1715344&sr=1-3
(Both Judy Allen books cover different need-to-know things)
In regards to bars/clubs
heres some more info, again, not claiming legitimate info.
excerpt pages from e-book again, same deal, page links at bottom.
http://www.entrepreneur.com/starting...icle41460.html
the startup cost chart is on the 3rd page.