As for oil stones.... I love them. but for a beginner if you went with oil stones, you'd need to set up something else up to flatten blade backs because oil stone won't do it, and it will challenge your sharpening skills right from the start. I'd be happy to recommend oil stones as I'm sure other here will be, but I don't think it's the right way to start.
Oilstones didn't work for me until after learning how to sharpen on water stones. For many years my sharpening efforts were frustrating. Water stones actually worked. For a few years after that my oilstones did not get used. Then one day it was too cold in the shop to sharpen with water stones so the oilstones were given another chance. Amazingly the oilstones benefited from my education with water stones.
Now both are used in my shop even on warm days.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)