It can be a big waste of time for both you and the lawyer if you aren't prepared for your first meeting. Being unprepared may also end up costing you money, because it will take longer for the lawyer you hire to get up to speed on your legal matter.
Prepare a list of questions to take with you to your first meeting. In theory, no question is too silly to ask. Keep in mind, though, that you don't want to scare a lawyer out of representing you. Questions you might ask a lawyer would include: