Preparation is very important to participate successfully in a seminar. Without proper preparation, it is likely that some aspect which the participant speaker has forgotten can land him in serious difficulties and lead to dismal performance in the seminar. The foremost requirement is good research about seminar topics. Some very successful speakers send a questionnaire to the participants of the seminar a week before the seminar. The questionnaire contains a few questions that are to be answered to highlight the key points of the presentation that one is going to make in the seminar.
There are certain other aspects to be checked in advance. In case internet is required for the presentation, availability at the venue has to be checked. A projector and screen must be available. The projector is to be connected to an audio visual system. Your laptop plug could be plugged into it.
The participants will not hear any speaker for long, however good the speaker is. Visual presentation by way of slides is very much needed to remedy this situation. The laptop is to be fully charged and it is better to carry the power cord. The slides can be moved through a remote control or using keys. A pointer can be of great help for focusing discussions on particular aspects covered in the slides.