The location within a document where additional information will be inserted when the user begins to type. The insertion point is commonly represented by a cursor or the I-cursor and is created by clicking the mouse cursor or tapping the screen where you want the insertion point to appear.
Insertion point example and practice
Below is a text box to practice creating an insertion point. In the below box click your left mouse button or tap your finger before the "inserting" word. If done correctly, you should have a flashing cursor as an indication of the insertion point. If you then began to type, any text you typed would be "inserted" in the middle of the text.