Open a messaging option. Then select create message. Then there will be four options. Select multimedia option from that. Many options available there for sending messages like( Picture ,music, photos)Select which one you want. Then select send option to the number you enter or search it from the phone contact book.
To receive and send MMS you need to configure your mobile. To do this you have to go to website of your mobile provider, select your phone and configure it. Maybe the provider can send you a SMS with the configuration or you have to put it manually.
First activate your MMS by sending SMS to your respective network operator. Then save the settings that your operator will send after registering your MMS. Then follow the same procedure as same as what you do for sending SMS from your mobile. Note that yours should be a multimedia mobile.
To send MMS, you have to go to website of your mobile provider, select your phone and configure it. Maybe the provider can send you a SMS with the configuration or you have to put it manually.