Listen here:
If you don't have a couple of minutes to listen then this image from the NRG Networking System covers the main points:

Good Networking!
Dave Clarke
All Information About Business Networking

In networking think about the compass when working out your strategy. This includes why you are networking, where you are headed with your networking and what you need to do to get there. What networks are a good strategic fit for you. The key relationships to focus on & the time you will invest.
Think about the clock for managing your time in relation to your networking activities. When you schedule time for a networking meeting also schedule in the time for follow up & 121 meetings. When you promise to do something then schedule a specific time. If Online Networks and Social Media are important to your business then schedule specific time.