[Docs] Described CLI and UI in Metrics; updated Protips.

Author: peterschmidt85

docs/docs/guides/metrics.md

@@ -1,11 +1,47 @@
 # Metrics
 
+`dstack` automatically tracks essential metrics, which you can access via the CLI and UI.
+You can also configure the `dstack` server to export metrics to Prometheus—this is required to access advanced metrics such as those from DCGM.
+
+## UI
+
+To access metrics via the UI, open the page of the corresponding run or job and switch to the `Metrics` tab:
+
+![](https://dstack.ai/static-assets/static-assets/images/dstack-newsletter-metrics.png){ width=800 }
+
+This tab displays key CPU, memory, and GPU metrics collected during the last hour of the run or job.
+
+## CLI
+
+As an alternative to the UI, you can track real-time essential metrics via the CLI.
+The `dstack metrics` command displays the most recently tracked CPU, memory, and GPU metrics.
+
+<div class="termy">
+
+```shell
+dstack metrics gentle-mayfly-1
+
+ NAME             STATUS  CPU  MEMORY          GPU
+ gentle-mayfly-1  done    0%   16.27GB/2000GB  gpu=0 mem=72.48GB/80GB util=0%
+                                               gpu=1 mem=64.99GB/80GB util=0%
+                                               gpu=2 mem=580MB/80GB util=0%
+                                               gpu=3 mem=4MB/80GB util=0%
+                                               gpu=4 mem=4MB/80GB util=0%
+                                               gpu=5 mem=4MB/80GB util=0%
+                                               gpu=6 mem=4MB/80GB util=0%
+                                               gpu=7 mem=292MB/80GB util=0%
+```
+
+</div>
+
 ## Prometheus
 
-To collect and export fleet and run metrics to Prometheus, enable the
-`DSTACK_ENABLE_PROMETHEUS_METRICS` environment variable and configure Prometheus to fetch metrics from
+To enable exporting metrics to Prometheus, set the
+`DSTACK_ENABLE_PROMETHEUS_METRICS` environment variable and configure Prometheus to scrape metrics from
 `<dstack server URL>/metrics`.
 
+In addition to the essential metrics available via the CLI and UI, `dstack` exports additional metrics to Prometheus, including data on fleets, runs, jobs, and DCGM metrics.
+
 ??? info "NVIDIA DCGM"
     NVIDIA DCGM metrics are automatically collected for `aws`, `azure`, `gcp`, and `oci` backends, 
     as well as for [SSH fleets](../concepts/fleets.md#ssh).

docs/docs/guides/protips.md

@@ -422,9 +422,7 @@ Getting offers...
 
 ## Metrics
 
-While `dstack` allows the use of any third-party monitoring tools (e.g., Weights and Biases), you can also
-monitor container metrics such as CPU, memory, and GPU usage using the [built-in
-`dstack metrics` CLI command](../../blog/posts/dstack-metrics.md) or the corresponding API.
+`dstack` tracks essential metrics accessible via the CLI and UI. To access advanced metrics like DCGM, configure the server to export metrics to Prometheus. See [Metrics](metrics.md) for details.
 
 ## Service quotas