Reddit mentions of The Entrepreneur's Guide to Business Law, 4th Edition

http://www.amazon.com/The-Entrepreneurs-Guide-Business-Law/dp/0538466464

There is probably an earlier edition that is cheaper.

https://www.amazon.com/Entrepreneurs-Guide-Business-Law-4th/dp/0538466464

I'm an attorney. This book is incredible.

Honestly the best book on this stuff is a textbook if you're interested.

http://www.amazon.com/The-Entrepreneurs-Guide-Business-Law/dp/0538466464

As always, the best advice is to consult a lawyer and CPA. I am neither, but I can share my personal experience.

As a solo-founder, setting up an LLC will involve less paperwork up front, less paperwork annually (C Corps have extra requirements, such as quarterly meetings/filings), and less cost. It also makes taxes much simpler, as in an LLC you can do owner withdrawals with passthrough taxation (i.e., you just do your personal taxes with a Schedule C) instead of dealing with salaries, W2s, dividends, double taxation, etc in a C Corp (which has to file its own taxes). If you find a co-founder, you can easily amend your LLC documents to give them part ownership. The C Corp only becomes advantageous when you want to hand out ownership of the company to non-founders. That is, if you want to raise money from investors, take on a board of directors, or give employees equity, then you can convert your LLC to a C Corp. For a good intro to these topics, check out The Entrepreneur's Guide to Business Law.

I am new to this, but here is one book that has been very helpful so far - The Entrepreneur's Guide to Business Law.