Networking is actually really fun and easy.. (or at least it can be) It's just getting people to know you and what you do, and having a good opinion of you... you don't have to be super-social to do it, you can just talk to people from church or your friends or relatives (or even people online), and you might meet someone who can later be helpful in your career or such... They will say, 'Oh Hermit does something like that, and he's quite good at it, want his e-mail/phone number?'
If you're eg someone who fixes computers or does IT, you don't need to be a super-cheerful/chatty person to do that, you just need to know how to do the job and show that.. (so even if you volunteer some of that knowledge/expertise and fix your brother's friend's PC, it's kinda still networking..)
I like networking, especially if it's in a 'seminar/workshop' setting.. you just get to know the other people there and talk to them, and if you click, you exchange contact info etc.
We're all 'networking' on this forum (and elsewhere online) too.. so think about it. It's just chatting and exchanging some communication, getting to know interesting people and talking to them...
Some people get good jobs without any networking whatsoever, I know some who got jobs from newspaper ads etc. Every case is different.. It's just one of the options.. and it's good to use many options if you can..