Networking groups are a decent way to find out who is who in the zoo.  Your focus is not to talk about yourself at these events unless asked upon to do so.  You want to go to a networking event to get others talking about themselves.  Find a common ground between the both of you and ask if they would be open to sitting down sometime in the near future so you could learn more about what they do.  Remember you're not in business to sell.  You're in business to help...by showing that you can help someone in their business, they will be the one asking or wanting to work with you.

Next would be putting on focused events targeted at your ideal client base and inviting them to come out to it.  I find that smaller groups work.  For example if you work with realtors, invite some of the realtors you feel could benefit from what you do and focus it around learning.  When they are in the room with others in their industry (their competition), it's a FOMO (Fear of missing out) that happens.  So at the end if you have an offer, you're more likely to get more takers on that as they will want to be a leg up on the others who didn't take it or who aren't in attendance.