I run a one day Essential Presentation Skills Course which is designed to cover the essential elements of an effective business presentation . Note, I said "essential" elements not "basic" elements". This is not an just an introductory course for people who have never given a presentation it is suitable for anyone who feels they need to improve their presentation skills, to be more confident, more engaging, more effective.
In my experience one day is long enough to cover the main points about public speaking, after all it's not rocket science, so my one day course costs less and means you need to take less time out of the office. I focus on the aspects of public speaking and business presentations which matter, the aspects that will make a difference to your presentations.
All my courses are very interactive and start with participants telling me what they want to learn. That way each course can be moulded to the needs of the participants. I can't promise that in one day I'll turn you into the ultimate raconteur but by the end of the day you will be more confident and you will know how to set about giving a presentation. The rest, as they say, is practise. The more presentations you give the better you will become, and I'll be around to help and support you through my on-going presentation support service, which is all part of my service, aimed at ensuring you gain the most from my training.
However, if you still feel that the extra practice presentations and more leisurely pace of a 2 day course would suit you better then I now run 2 day effective presentation skills courses at most venues.