It's always great to have friends who you can rely on for a specific service, or assistance in a particular area.
I just got a bike for the very first time, and while I can cycle, I know hardly anything about road cycling, or bike maintenance or anything (I only learnt to ride a bike by myself when I was sixteen).
Thankfully, I have a cyclist friend from University who said that he can help service my bike and teach me things like dealing with roundabouts, gears, braking downhill, and so on.
I don't quite have a friend who is very handy with computers, or D.I.Y, electronics, or cars, but I will eventually.
Discuss having the sort of friends you can rely on to help you out with specific areas!