Hi @KathyBaldwin2 ...
You can use the keyboard combination Ctrl + F to "find" text on the page (in this case, your Canvas Dashboard). Once the window opens to type in text, just type in part of the name of the course, and it should find it.
Now, if you want to customize the display of courses that appear on your Dashboard, you can go to your "Courses" >> "All Courses" screen and place a yellow star next to courses that you want to "favorite" (so the star turns yellow). Then, go back to your Dashboard, and those courses you've starred will be the only ones displayed on your Dashboard. If you are unable to place a star next to a course, hover your mouse over the star, and a little tooltip should appear explaining why it might not be able to have a yellow star next to it. (These two Guides are essentially the same.)
I hope this helps a bit. Sing out if you have any other questions about this...thanks!