I spent about 30 minutes to an hour on the tutorial, but I didn't really follow it to a T, so it was more frustrating than it should have been due to my error. I basically explored for 2 days worth in game and was dying of thirst. When I followed the tutorial, I was able to have a simple camp before sundown on the first day.
These are some tips that I wish I would have paid attention to.
https://www.gamesradar.com/stranded-deep-tips/It is a little weird getting used to the navigating the crafting menu and the inventory, but it is not wildly different than say Skyrim in that regard. Know that you need to use R2 when holding coconuts to drink or eat them (after processing them of course). I appreciate that you CAN shit your pants.
It supposedly is about 33 hours of game play. So far I like it quite a bit and definitely plan on beating it. I'm going full Tom Hanks.
EDIT: Also, make sure to pull your raft out of the water onto the beach otherwise it drifts off to sea.
EDIT 2: You need to place plant fiber into the water still for it to work.