Hello and welcome back! Lovely to see you've decided to get back into hamsters
I suggest reading through the forums to get very specific info on care. However, I will cover the basics of what has changed.
Cage size: the minimum cage size (what is considered humane) is now 450 sq in rather than 360. However, recent studies have suggested that for the larger species such as Syrians, 1,000 sq inches+ would be best
Bedding: Fitch is widely regarded as the best substrate available, so if you're in the UK, try to get hold of this. However, in the US, kaytee clean and cozy is definitely the best you're going to get
Wheel: the best quality brand out there is the silent runner hands down! However, the wodent wheel, Carolina storm, and trixie all come in close seconds
What species are you planning on getting? Knowing this will help us recommend cages! Good luck, make sure to re-read everything and ask lots of questions