Public speaking skills are often overlooked by people as being unimportant or they may think that they will never be called to speak in public, that's why they do not bother to get themselves acquainted with any public speaking skills. Truth is, more often then not, it is these people that often get tongue tied and being in a state of total meltdown when faced with the possibility that they will be asked to present a topic in public, even a topic they know inside out.
To some people, they do not put high importance or regards to the importance of having good public speaking skills because they have an impression that good public speaking skills are only for people in sales or marketing. This is untrue. Good public speaking skills are also a hallmark of good communication skills and having good communication skills is essential for any career, unless you are the only person in the entire office. For example, if you are signing up for a new job, any job at all, you will probably need to go for an interview. During the interview, the interviewer does not just judge you based on your qualifications, your ability to communicate, both spoken and unspoken, also constitutes a part of the decision making process of whether you will be accepted or not. If you are a student in college, your ability to deliver a good public speaking session will also be tested on regular basis. An example of this will be the various class presentations that you need to do over the course of the semester and the grading criteria will almost certainly have an element of "clarity of delivery" in it. By not knowing how to give a clear and effective presentation using good public speaking skills will only disadvantage yourself because if you cannot communicate clearly to your audience, it is as if you have never learnt the subject at all.
This is one of the reasons perhaps why a lot of ideas by some of the most intelligent people on the planet are only discovered many years after their death. One of the possible reasons is that although they are highly intelligent and have written very useful information, they just cannot seem to put through to people what they are thinking about due to their lack of ability to communicate to a large group of people using public speaking techniques.
Public speaking skills are not only used in situation where you have to address a large group of people. Communication skills and public speaking skills are inter-related, hence, if you improve your public speaking skills, you also invariably improve your interpersonal communication skills with your peers and family.
Therefore, if you are ever presented with an opportunity to practice public speaking or learn public speaking skills, don't shy away from it. Whether you are in class, in the office or in any kind of setting that requires you to deliver a message to an audience, pick up your courage and go for it. Public speaking is a skill and the more you use it and practice it, the better you will become. To improve your public speaking skills or even if you are a new beginner, there are a lot of public speaking audiobooks or guide books to learn from. By picking up a good public speaking skill, you will have an edge over others who don't.