When you start learning to use VectorWorks you might find that you leave the current tool on, and then try to do something else like selecting things.
When you are learning VectorWorks you will￼ find it easier to change back to the 2D Selection tool after you have finished with a tool. This will stop you accidentally creating more things.
After you have placed a symbol from the Resource Browser change back to the 2D Selection tool. That will stop you accidentally adding more symbols in your file.
Some people have a habit of clicking in the drawing area when they have finished with a tool. Changing to the 2D Selection Tool will stop this being a problem.