fix(docs): Quick start guide (#33006)

**Description**
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⚒️ Fixes https://github.com/truecharts/public/issues/32174
⚒️ Fixes https://github.com/truecharts/public/issues/29000
⚒️ Fixes https://github.com/truecharts/public/issues/33004

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code
- [x] 📜 Documentation Changes

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- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
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- [x] 📄 I have made changes to the documentation
- [ ] 🧪 I have added tests to this description that prove my fix is
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- [ ] ⬆️ I increased versions for any altered app according to semantic
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- [x] I made sure the title starts with `feat(chart-name):`,
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`fix(docs):`

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---------

Signed-off-by: Kjeld Schouten <info@kjeldschouten.nl>
Co-authored-by: Kjeld Schouten <info@kjeldschouten.nl>

website/src/content/docs/guides/index.md

@@ -20,9 +20,9 @@ Clusters created using Clustertool come pre-packed with most of these charts pre
 
 Install the following charts if not already installed:
 
-- [Cert-Manager](https://cert-manager.io/)
-- [Cloudnative-PG](https://cloudnative-pg.io/)
-- [Prometheus-Operator](https://truecharts.org/charts/system/prometheus-operator/)
+- [Cert-Manager](#cert-manager)
+- [Cloudnative-PG](#cloudnative-pg)
+- [Prometheus](#prometheus)
 
 ---
 
@@ -35,3 +35,106 @@ Install the following charts if not already installed:
 - [Snapshot-Controller](https://truecharts.org/charts/system/snapshot-controller/): Required for Volsync
 - [Volsync](https://truecharts.org/charts/system/volsync/): For Backup and Restore of PVCs
 - [Traefik-CRDS](https://truecharts.org/charts/system/traefik-crds/) & [Traefik](https://traefik.io/traefik/): For Ingress and Reverse Proxying
+
+## Upstream Operators
+
+Truecharts relies on multiple Charts for functionality like Postgres Databases and Metrics.
+Therefore we require certain Charts to be installed. Below you will find example configurations for most of them:
+
+### Cert-Manager
+
+Cert-Manager is used  together with our clusterissuer to create SSL certificates for ingress.
+The chart installation can be found [here](https://cert-manager.io/docs/installation/helm/).
+
+Example configuration:
+
+```yaml
+
+crds:
+  enabled: true
+dns01RecursiveNameservers: "1.1.1.1:53,1.0.0.1:53"
+dns01RecursiveNameserversOnly: false
+enableCertificateOwnerRef: true
+
+```
+
+### Cloudnative-PG
+
+Cloudnative-PG is used for Postgres databases in many of our charts.
+The chart can be found [here](https://cloudnative-pg.io/charts/).
+
+Example configuration:
+
+```yaml
+
+crds:
+  create: true
+
+```
+
+### Prometheus
+
+Kube-promotheus-stack is used for metrics. 
+The chart can be found [here](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack).
+
+As we provide our own grafana with included dashboard. We recommend to disable grafana in the kube-prometheus-stack:
+
+```yaml
+grafana:
+  enabled: false
+  forceDeployDashboards: true
+  defaultDashboardsEnabled: true
+```
+
+We generally advice to run the full kube-prometheus-stack but as it is quite resource intensive you can run the minimum requirement which only requires to add the CRDs and Operator. This can be done like this:
+
+```yaml
+crds:
+  enabled: true
+prometheusOperator:
+  enabled: false
+## Everything down here, explicitly disables everything BUT the operator itself
+global:
+  rbac:
+    create: true
+defaultRules:
+  create: false
+windowsMonitoring:
+  enabled: false
+prometheus-windows-exporter:
+  prometheus:
+    monitor:
+      enabled: false
+alertmanager:
+  enabled: false
+grafana:
+  enabled: false
+  forceDeployDashboards: false
+  defaultDashboardsEnabled: false
+kubernetesServiceMonitors:
+  enabled: true
+kubeApiServer:
+  enabled: false
+kubelet:
+  enabled: false
+kubeControllerManager:
+  enabled: false
+coreDns:
+  enabled: false
+kubeDns:
+  enabled: false
+kubeEtcd:
+  enabled: false
+kubeScheduler:
+  enabled: false
+kubeProxy:
+  enabled: false
+kubeStateMetrics:
+  enabled: false
+nodeExporter:
+  enabled: false
+prometheus:
+  enabled: false
+thanosRuler:
+  enabled: false
+```