Installing a ceiling lamp is easy. Firstly, you need to remove all forms of packaging, screws and other paraphernalia of the bulb. Once done, screw the bulb into the socket and then secure the lampshade over the bulb. Connect the cord with the same (if applicable).
Once you have done this step, hang the cord from the hook or an anchor that you installed previously so that the lamp sits at the desired height. Then plug the light in and hide the cords using cord cover, if desired. If you feel that the matters are beyond your control, then you need expert help. You need to call in someone with the relevant experience in handling the situation.