Hi, ghwan77, welcome to the forum. There's plenty of good information available here. Look over the posts under New Mystery Shoppers and you will get a good basis for how to do everything. To apply for mystery shopping jobs, you need to go to the website of the different mystery shopping companies and put in an application. Then you will be able to search their job boards and apply for jobs in your area. Read everything you can on this site and it will give you an idea of how it works. There is a list of mystery shopping companies here also. I suggest you apply with as many as you can. While you can usually get a few mystery shopping jobs pretty quickly after signing up, be prepared to wait for your shop payment (and the reimbursement, if the shop requires you to purchase anything). Some companies pay very quickly, but many take a couple of months, so this is not fast money.