What sorts of organizations are exempt from federal income taxes?
The Internal Revenue Code specifies many sorts of exempt organizations besides the familiar 501(c)(3). Donations to most other types, though, cannot be deducted from the donor's income taxes. The IRS website offers a complete list.
New Form 1023 Effective 2005
Form 1023 is used to file for recognition as a tax-exempt charity (etc.) with the IRS. The new form must be used after April 2005, and may be used before then.
How do we get our Federal tax-exempt number?
There really isn't any such thing. The Federal Employer Identification Number (EIN) is used for identifying nonprofit organizations. Local tax exemptions are set by local jurisdictions and must be researched locally.
Can I sell things for a profit and be tax-exempt?
Selling items does not risk an organization's tax-exempt status if the revenue generated is used to promote the organization's exempt function and the applicable taxes are paid on any unrelated business income.