Good advice so far.
A lot depends upon the time you have available and if you can keep a strict schedule. Some are retired and don't mind being up every day at daylight to feed the hens and to remove the feed at night. Just starting off you aren't likely to have a rodent problem so you can get away with leaving feed out all day.
The flock does best with feed available 24/7 or at least all daylight/lighted coop hours. They will self regulate on the feed, won't overeat like a horse will.
A good feeder does save a good amount of feed from waste, keeps the feed dry even if used outside, keeps the wild birds out as well as the rodents and squirrels. You can visit the coop on your own schedule and leave for a week without worrying about feeding the hens.
But, you don't need a feeder until you need one. Track your feed consumption, one quarter pound per hen per day, ignore a rooster or two unless you have a lot of them as they eat very little. If you see your feed consumption going over a quarter pound per day then you need a good feeder to stop the feed theft. When you get to that point, first advice is to stay off
Amazon. A seller loses 35% right off the top with selling fees and subsidized shipping including shipping product all over the U.S. to the warehouses. Then the return policies are so liberal that another 10% of the selling price will evaporate, one returned feeder will cost enough to wipe out the profit on the next ten to twelve feeders. As a result, the only products you will find on
Amazon are the Chinese made ones where they have huge markups.
Dig around online and find an independent manufacture who is more likely to have a solid product sold at a reasonable price. And read those negative reviews very carefully and do not ignore their advice. Lots of feeders get good reviews simply because there isn't a rodent or wild bird infestation yet to test the feeder. Lots more reviews are fake or the product are given away in return for a review.
So, try to keep the feed in front of the hens during all daylight or lighted coop hours. How you do that is up to you and inline with the challenges from weather or vermin. Keep your bulk feed in metal drums with tight lids and clean up any pathways that rodents can use to travel around the coop so that natural predators can have a shot at limiting their numbers.
Welcome to the forum.