The real engine building the right relationships comes through the 121 meetings.
The first thing to do is to identify and join those networking groups whose members operate in similar markets to you and share the view that effective networking is about building the right sort of relationships.
Then you can have regular 121 meetings which will enable you to give referrals which leads to business coming back to you.
Then you can do some quick calculations.
How many deals do you need to do in the next year to achieve your revenue target?
How many referrals do you need to get that number of deals?
How many 121 meetings do you need for you to generate that number of referrals for your network, especially for those people who will become your inner network and your advocates?
Remember as you give referrals regularly you will receive a similar number of referrals back.
This is the start of your strategy, creating an effective plan around the activity to get the results you want.