Congratulations! First remote job is amazing accomplishment! So now that you have a remote job will you begin to travel? Here's a couple tips for building your network based on what you said:
1) If you're not travelling yet, start attending local networking and related events for your industry and do in person networking! If you don't have these in your location then all the more reason to travel! This is a digital nomads forum after all. Once you are travelling since you need to work I'm assuming you will be in locations that have co-working spaces. Work from them and attend all of their networking and events religiously!
2) Setup a great LinkedIn and add people there and on Facebook (when appropriate), be sure to connect with the people you're meeting offline, online! Engage with them online after you're connected.
3) Join groups online and participate just like you're doing here! Facebook and LinkedIn both have lots of great groups for professionals where people help one another out. I notice that the people who frequently participate in these groups are often recommended by others.
4) Consider doing one of the digital nomad getaways available online. Pricey, but you'll meet a large group of people and have a chance to form deep connections.
Hopefully this was helpful!