There are many reasons to take advantage of training and also reading the manuals. The many questions you have asked here recently are covered in both sets of documentation.
Make the case with your boss that you will be much more efficient in the use of LoadRunner after training. The many questions you have to seek answers to on basic subjects today you will not have to pursue. When you do have to ask a question of your peers, your questions will be well formed and narrowly scoped and list the resources you have already consulted prior to asking the question.