Installing a plugin is a fairly simple task:
Click on
Plugins in the menu on the left and click on Add New.
Next, simply enter
WooCommerce in the Search Plugins field and hit Enter.
Verify if the correct plugin is shown on top and click Install Now. Over time results will vary, but the WooCommerce plugin itself should always appear on top.
Click on Activate Plugin. Note that in the shown screenshot, we're installing .