You can find a ton of great info and generous people right here:
https://www.bladeforums.com/forums/maintenance-tinkering-embellishment.794/
You can get a ton of different answers and most of them won't be wrong or right, just different. For example, for a guided system, I like the KME, others swear by the Edge Pro and so on. I like Arkansas stones for steels that are receptive to them but others view them as ancient history. I don't use water stones but others won't use anything but.
The best all around answer is usually diamond. Diamond stones can handle just about any steel. There are trade-offs but in general something like a 300 and 600 grit diamond can go a long way. Generally speaking, you have to be sharp off whatever the lowest grit stone you have before moving up.
No matter what you choose, it is essential to get a decent sized permanent marker. I like red because I can see it easier. Color the secondary bevel and this will guide you through the proper angle. Ink coming off on the shoulder of the bevel? You're too low. Just coming off the very edge of the bevel? Too high.
A decent lighted 20x loupe is pretty nice too.