Sir Herbert Gussett, apologies for assuming that there may be one or two pilots on the forums who have completed a logbook in the past and may be able to provide some information to someone who is relatively new to aviation.
Seriously though, the correct answer is that
instruction on how to fill in your log book should be included in your course. Your instructor should tell you how to fill it in, and it's important that you get it right or you might not get your licence.