Go on youtube (outdoors55 has some good videos) and just watch a bunch of videos and how different people do it. You can get excellent results with 1 stone and a strop, although 2 stones + strop is probably ideal.

https://www.youtube.com/watch?v=QJT5BVt7c5c is an excellent video.

https://www.youtube.com/watch?v=kFhMGJYhYpU The famous Bob Kramer video (hes a bladesmith but started his career as a knife sharpener).

Kyle Noseworthy is good.

Burrfection is a good channel.

https://www.youtube.com/watch?v=Yk3IcKUtp8U&t=4265s - the king of knife sharpening videos. 3 hours in depth tutorial. The guy makes his own knives and stones so ignore the marketing of his products, his technique is excellent and the videos are good. Im not a big "thin behind the edge of every knife" kind of guy but to each his own.

Personally I use a spyderco ceramic stones because they dont need to be lubricated, although they can be. Most japanese stones need to be soaked in water before they sharpen, and you need to learn to use the slurry they create so its a little bit of a mess. I use a DMT extra rough for regrinding edges, but any DMT diamond stone is a pretty good value since they dont need to be flattened and they will cut through any steel.

One thing you'll find about the way that "sharpening services" work is they use a high speed belt to sharpen the knives to save the time it takes on a stone. The issue with belts is they quickly heat up the steel and ruin the temper if you aren't careful, permanently destroying the knife. (Short of reheating it, quenching it, tempering it again). If you notice the blade is a slightly different color than the rest of the knife, it means the temper has been ruined and the knife will no longer hold an edge very well since the steel is now significantly softer.

Learning to sharpen knives isnt about videos, its about spending a few hours on a stone. Buy a shitty knife, find a rock, get your sharpening stone and sharpen to a razor, dull it on the rock, sharpen to a razor over and over and over until you are confident enough to do it on your good knives. Sharpening really can be boiled down to grind the blade until you form a burr, flip and grind for roughly the same amount of time until the burr flips, then either use a finer stone or a strop to remove the burr and the knife will be razor sharp.

PM me if you have any questions on knife sharpening, stone advice etc. There's a wealth of knowledge out there but it can be hard to determine what is useful or where to start.

Final edit - don't fall into the trap of thinking that being a "master" sharpener is all that impressive. Anybody with a few hours on a whetstone can learn to sharpen anything to a razor's edge once you understand the general principles. Somebody with more practice will do it faster and more consistently, but its a relatively low skill ceiling to sharpen a knife.