Some people like to know just how many hours they've spent u/w so they add this to their logs (wish I had done that!).
I began with logging my training dives and noting things like how I was feeling, how much weight I used, any problems I had, fish I saw. It's a good way to see progress.
You can use it as a great reference to see what worked and what didn't, how much weight you used in different conditions with different exposure suits.
Many places they they will ask for a log book but personally I never have had anyone ask and I don't require it because some people just don't do it. It's not a requirement.
Personally, I logged my first 400 dives and have fun going back and reading them from 23 years ago. I wish, I really wish, I had logged them. Sometimes it's a pain to do but you'll be glad you have a record. You can get a log book in any dive shop or even make your own.
I began with logging my training dives and noting things like how I was feeling, how much weight I used, any problems I had, fish I saw. It's a good way to see progress.
You can use it as a great reference to see what worked and what didn't, how much weight you used in different conditions with different exposure suits.
Many places they they will ask for a log book but personally I never have had anyone ask and I don't require it because some people just don't do it. It's not a requirement.
Personally, I logged my first 400 dives and have fun going back and reading them from 23 years ago. I wish, I really wish, I had logged them. Sometimes it's a pain to do but you'll be glad you have a record. You can get a log book in any dive shop or even make your own.