First i would check with boost mobile if that blu studio 6.0 HD is compatible for boost by giving them the IMEI # and if you want to oder a sim card you would also have to call it in at 1-866-402-7366
To order a sim especially to bring your own device is free you just have to weight 3-5 days if you go into a store they will charge you.
Hope i was able to help, goodluck
1st you have to call boost at 1-866-402-7366
you need to listen to the sytem so you can pick the best options for you.
After you call just wait to dial your numbrer then press 5 after that press 0 untill the system ask for your 4 digit pin or transfers the call to a rep.