[Fundamentals] Concepts cleanup

public/_redirects

@@ -554,7 +554,7 @@
 /fundamentals/get-started/setup/ /fundamentals/setup/ 301
 /fundamentals/get-started/setup/minimize-downtime/ /fundamentals/performance/minimize-downtime/ 301
 /fundamentals/basic-tasks/maintenance-mode/ /fundamentals/performance/minimize-downtime/ 301
-/fundamentals/get-started/concepts/what-is-cloudflare/ /fundamentals/concepts/what-is-cloudflare/ 301
+/fundamentals/get-started/concepts/what-is-cloudflare/ https://www.cloudflare.com/learning/what-is-cloudflare/ 301
 /fundamentals/get-started/concepts/cloudflare-challenges/ /waf/reference/cloudflare-challenges/ 301
 /fundamentals/get-started/concepts/accounts-and-zones/ /fundamentals/setup/accounts-and-zones/ 301
 /fundamentals/get-started/concepts/cloudflare-ip-addresses/ /fundamentals/concepts/cloudflare-ip-addresses/ 301
@@ -635,6 +635,9 @@
 /fundamentals/security/trace-request/how-to/ /fundamentals/trace-request/how-to/ 301
 /fundamentals/security/trace-request/limitations/ /fundamentals/trace-request/limitations/ 301
 /fundamentals/security/trace-request/changelog/ /fundamentals/trace-request/changelog/ 301
+/fundamentals/concepts/what-is-cloudflare/ https://www.cloudflare.com/learning/what-is-cloudflare/ 301
+/fundamentals/concepts/the-internet/ https://www.cloudflare.com/learning/network-layer/how-does-the-internet-work/ 301
+/fundamentals/concepts/free-plan/ /fundamentals/subscriptions-and-billing/free-plan/ 301
 
 # gateway
 /gateway/about/ /cloudflare-one/policies/gateway/ 301

src/content/docs/fundamentals/concepts/free-plan.mdx → src/content/docs/fundamentals/subscriptions-and-billing/free-plan.mdx

@@ -2,7 +2,7 @@
 pcx_content_type: concept
 title: Our Free plan
 sidebar:
-  order: 4
+  order: 1
 head:
   - tag: title
     content: Why Cloudflare offers a free plan