Finally got the bike raised up in the shed and took the fork legs out.
The oil looked pretty dirty. Ive never changed the oil before in the fork.
What type of oil should I get?
All i did was loosen the top part of the fork and drain it upside down, are there any other maintenance things I should do while I have the forks out?
I really need to get to the steering bearings. But i have no idea what to do.

there is a nut on the top part below the handlebars. But it seems really hard to get to, im not sure i have the tool. It has to be really thin?
How do I get it out?