My husband has been golfing for over 40-50 years and I have for about 6 years. He has a handicap of 6 and I am always working on improving my swing and handicap. There are many brands out there and we both bought Cleveland irons (HB Launcher / Turbo) last year after my husband having tried out several brands because he likes the feel of a heavier bottom, making swings easier and probably more forgiving. I was very happy with my 5-year old Adams and find very little difference between my older clubs and the new clubs. He has been using Taylormade drivers and woods and he just bought the Taylormade M6 D (D for draw) driver and loves it.
You can visit any of the large golf outfits local to your area which will let you test out various clubs before you decide what to buy.
Our belief is that until one gets better and has a repeatable swing, fitting is pointless. My husband can probably benefit from getting fitted clubs because he knows what he is doing, but he has never gotten fitted clubs. In other words, if you are a good golfer, fitting is beneficial.
I have had hundreds of hours in 1:1 golf lessons including as recently as 3 weeks ago. Golf instructors can help with fundamentals and minor fixes along the way but there is no better way to improve than to keep playing and watching lots of youtube videos from golf instructors. My favorite youtube videos are ones from Danny Maude and Clay Ballard. I highly recommend them. On the other hand golf instructors can also cause major issues to one's golf swing. I have sworn off having paid lessons for a while after my last few lessons which caused major sciatica joint pain in my back. I have since reverted to my old setup.
Enjoy golfing in retirement. It is wonderful for the physical health. Mentally it can be very frustrating.