There are fancy & plain
AlYou can go down to the stationary store and buy a bound notebook with ruled paper and just enter stuff. This has the advantage of being cheap and flexible. I don't record too much for daysails, but keep more extensive entries on cruises.Or, you can go to a chandlery and by log books with fancy covers and different page setups. My sister bought on of those for us when we got the boat. The thought was appreciated, but I find it awkward to use.The best compromise is to get the bound notebook and affix a fancy cover to it.As to content: The topics you mentioned are OK. Things like "tide" may not mean a lot since you can look up or calculate the tide conditions. On the other hand, making notes about handling & trim experiments that you perform during different WX conditions can be useful, recording engine times (generally only the clock hours when you secure the boat for the day), and any other maintenance-related items. During cruises we do hourly log entries of lat/long position, battery voltage levels, wind speed & direction, sea state, sail changes or engine starts, barometer/temp/humidity, watch crew names, etc.Reserving the last ten pages as a "Guest Log" is a nice touch, too. Get your gusts to sign the log & indicate their hometown and comments.There are a few practical reason for keeping a log. Two biggies are: boat usage & maintenance records, and having a passage record to take to court or your insurance agent if things go bad. Beyond that, the log provides a great memory-jogger to re-create the fun (and terror-filled) times. --Ron