To keep the bike running.....

[jandijkgraaf]

What I mean is this..
I'm old..but not retro..this might be the last bike to ride.
I want to know what one can do to keep the bike on the road.
The things one can do without dealer service.
I know..some of you are doing everything themselves.
And that's good..but what special tools are needed along the road is a puzzle to me.
That's why I ask.
What can one do to keep the bike on the road?
What tools do you need?
Currently I want to change the oil and filter.
Dealer is asking 110 euro's for that..including the filter.
Now..I did that in the past on other bikes for just a fraction of the price..no special tools needed.
In short..can anyone here tell me how to proceed to keep a 2005
16000 miles on the clock Nomad on the road?
I mean..doing it yourself..without being robbed.
Please..all you self supporting guys out there..let me know.