It depends on your visa category.
If the category does not subject any annual quota (IR/CR), your case will be referred to the National Visa for processing.
National Visa Center will be in contact with you and your relative for further visa application.
AIT is the last step.
However, if the category is any annual quota (F), you will be placed in queue based on your priority date.
2012-06-21 04:08:37 補充：
If your husband is a citizen, then it will be IR1/CR1.
The entire process (after I-130 is approved) takes about 6 months to 1 year.
2012-06-21 04:09:16 補充：
National Visa Center will notify you for the interview detail.
You will be contacted in each step.
2012-06-22 01:30:01 補充：
1. If you have married more than 2 years, then you are IR1. Otherwise, CR1.
2. They will contact whoever is the representative on file. If no representative, either you or the husband will be contacted.
2012-06-22 01:30:13 補充：
3. No - it takes about 6 months for you to get the visa finally. The actual process may start within 1-2 months.