Add alerts page to quickstart guide

Author: Alex Krawiec

docs/product/onboarding/alerts-dashboards.mdx

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+---
+title: Sentry Alerts and Dashboards
+sidebar_title: Alerts and Dashboards
+description: "An easy onboarding guide for Sentry."
+sidebar_order: 6000
+---
+
+By the end of this guide you'll be able to create and customize Sentry alerts and dashboards to monitor key metrics, track issue trends, and gain real-time insights in to your application performance. If you get stuck anywhere, try [asking Sentry AI](https://sentry.zendesk.com/hc/en-us?askAI=true) or join our [Discord](https://discord.gg/sentry) community.
+
+## 1. Alerting Strategy
+
+Now that you've integrated with Slack and have added your members and teams, it's time to create [Sentry alerts](/product/alerts/best-practices/) to ensure real-time issue detection, enabling faster debugging and reducing downtime. Configuring alerts using specific thresholds or conditions helps prioritize problems, improving system reliability and incident response time.
+
+### Alert Recommendations
+
+- **Error Alert (High-Frequency)** - Triggers when a new or existing production issue suddenly spikes in frequency.
+
+<Arcade src="https://demo.arcade.software/YaLyaOnchFhnNgnnegdx?embed" />
+
+- **Performance Alert** - Detects and alerts for specific performance metrics when they exceed a specified threshold.
+
+<Arcade src="https://demo.arcade.software/OKhoLV2GUeP1xHQIDAbM?embed" />
+
+- **Crash Rate Alert** - Monitors application stability by tracking the percentage of users experiencing crashes within a given time frame. 
+
+<Arcade src="https://demo.arcade.software/r2YOeIh3sj9Lzmc3vBmj?embed" />
+
+- **Anomaly Detection** - Sentry can simplify your alerting needs by automatically detecting anomalies and proactively alerting you.
+
+<Arcade src="https://demo.arcade.software/lkvlGb3Cxh4ZwvEbfM0X?embed" />
+
+You can also create metric alerts for all you custom-instrumented transactions/spans based on key performance indicators such as [throughput](/product/alerts/alert-types/#performance).
+
+<Arcade src="https://demo.arcade.software/Ij5ofpPdcu6i71HPdKX2?embed" />
+
+## 2. Sentry Dashboards and Discover
+
+Setting up Sentry dashboards is crucial for speeding up triage and offering a real-time view of critical issues, trends, and performance in your app. If an irregularity is observed, Sentry dashboards allow users to jump directly into troubleshooting with a few clicks.
+
+### Recommended Dashboards
+
+1. **Error Overview Dashboard** - Provides a high-level view of application health, showing you error trends, most frequent issues, and spikes in error occurrences.
+
+2. **Performance Monitoring Dashboard** - Tracks transaction durations, slow API calls, and database query performance to identify bottlenecks.
+
+3. **Mobile Crash Rate and Release Health Dashboard** - Monitors application stability and release impact by tracking crash rates across different versions.
+
+4. **Critical Experience Dashboard** - Tracks errors or performance bottlenecks in your application's critical experiences. [See an example](https://sandbox.sentry.io/dashboard/126679/).
+
+Congratulations on completing the Sentry onboarding guide! You now have the foundation to make the most out of Sentry. Here are some highlights on what you've implemented:
+
+- **Projects and Integrations**: Connect your projects and integrate with your tools to track errors and performance.
+
+- **Team Members**: Invite teammates and manage permissions for better collaboration.
+
+- Adding Custom Context and performance instrumentation.
+
+- **Alerts**: Set up custom alerts to say on top of critical issues.
+
+- **Dashboards**: Create custom dashboards for quick project insights.
+
+- **Filtering and Grouping**: Organize and group issues for easy racking.