You will need to book onto one of the webinars listed in the email. The webinar will last 90 minutes and is already included in the cost of your course. Once you have attended one webinar then you have completed Block 3 of the FA Level 2 qualification.
As part of the block 3 element of the Level 2, you will have access to the FA Community.
More information on accessing the FA community can be found here.