Figure out which country or countries you will be visiting in the Schengen region, and then go to that country's consulate. If you intend to stay in multiple Schengen countries, apply for a visa at the consulate of the country which is your main destination or the country where you are going to spend the most number of nights.
Gather documents for your long-stay visa. You will need a valid driver's license, an undamaged U.S. passport, current government ID or military ID to apply for a tourist visa.
Visit the consulate of the country that has jurisdiction over your place of residence. For example, if you plan on staying in France and you live in Los Angeles, go to the French consulate in Los Angeles. Access the ImmiHelp website and click on the country where you'll be staying. From here, there are lists of consulates that you can visit.
Fill out the application for the Schengan visa, and then pay your fees. You will need to provide your name, address, social security number and other personal information. According to the ImmiHelp website, the consular staff grants a speedy and knowledgeable handling of your application.
Make an appointment and revisit the consulate where you applied for the Schengan visa for an in-depth interview. After accepting your application, the consulate will conduct an interview about your intentions during your stay. After the interview, the consulate will look over your application and recent interview again, and then settle whether you are fit for a long stay Visa.