The 33 countries *exempted are:

The United States of America, Britain, France, Italy, Germany, Canada, Australia, New Zealand, Japan, Holland, Belgium, Luxembourg, Switzerland, Austria, Sweden, Norway, Denmark, Portugal, Ireland, Greece, Finland, Spain, Monaco, Vatican, Iceland, Honduras, San Marino, Liechtenstein, Brunei, Singapore, Malaysia, Hong Kong, and South Korea.

*Exempted- they can come to Qatar even without a visa. Visa is applied at the Immigration upon arrival.

Lisa1004 is right, need to have a credit card to pay 100QR for your visa that is good for 1 month stay from the date of arrival.

Shav
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"Don't judge my brother, he's not a book"---melanism