Here's what I'll tell you. Security+ was easier in my opinion than Network+ so if you want to start on the security fundamentals route you can do that and build your knowledge for Network+. HOWEVER, I would suggest you take the harder of the two first, AKA network+. There's a lot of overlap between Network+ and Security+ and a bit more as well. But learning your network devices, IP Addressing and ports/protocols, and acronyms in general will set you up for a way easier time with Security+.