When you have a chosen career, be it nursing, physio therapy, dentistry etc. there will always be a need to update that knowledge. Quite often the employing hospital or medical centre will provide the training for their staff, but there are other occasions and situations when someone needs to sort their own info out and get their training needs updated.
There are all manner of courses available. Leading medical healthcare course providers are the professional bodies for this line of teaching. They can provide top up courses as well a baseline assessment work. What is important is to recognise how one learns best and to choose a training course that meets those expectations. Do you learn best from demonstration, hands on style, or are you more of a reading up on a topic and then describing and writing about it. Each type of student will need special attention.