Nothing wrong with that tutorial, Why CTRL+V, then CTRL+F, then CTRL-V, After you have copied wallet address, you need to paste clipboard. It means we need the first CTRL+V, After we are pasted wallet address, we need to check wallet address from clipboard results, then we need CTRL+F.  The last CTRL+V is for a paste wallet address on the search form.

So, for complete process is CTRL+C > CTRL+V > CTRL+F > CTRL+V, like LoyceV says.