Feature/extend self hosting faq (#3068)

* Extend self-hosting FAQ

* Update changelog

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Added an index for `isExcluded` to the account database table
+- Extended the content of the _Self-Hosting_ section on the Frequently Asked Questions (FAQ) page
 
 ### Changed
 

apps/client/src/app/pages/faq/self-hosting/self-hosting-page.html

@@ -18,6 +18,76 @@
           <a href="https://github.com/ghostfolio/ghostfolio">GitHub</a>.
         </mat-card-content>
       </mat-card>
+      <mat-card appearance="outlined" class="mb-3">
+        <mat-card-header>
+          <mat-card-title>How do I add a new currency?</mat-card-title>
+        </mat-card-header>
+        <mat-card-content>
+          <p>
+            Ghostfolio manages currencies automatically based on all the recored
+            activities. If you need an additional currency, you can manually
+            enter it.
+          </p>
+          <ol>
+            <li>Go to the <i>Admin Control</i> panel</li>
+            <li>Click on the <i>Add Currency</i> button</li>
+            <li>Insert e.g. <code>EUR</code> in the prompt</li>
+          </ol>
+        </mat-card-content>
+      </mat-card>
+      <mat-card appearance="outlined" class="mb-3">
+        <mat-card-header>
+          <mat-card-title
+            >How do I resolve
+            <i>No exchange rate has been found</i> errors?</mat-card-title
+          >
+        </mat-card-header>
+        <mat-card-content>
+          <p>
+            In Ghostfolio, you are responsible for providing the relevant
+            historical exchange rates. This can be done with a one-time import
+            of the data. If you see errors like
+            <i
+              >Historical exchange rate at 2024-01-01 is not available from
+              "EUR" to "USD"</i
+            >
+            do the following:
+          </p>
+          <ol>
+            <li>Go to the <i>Admin Control</i> panel</li>
+            <li>Go to the <i>Market Data</i> section</li>
+            <li>Select <i>Filter by Currencies</i></li>
+            <li>Find the entry <i>USDEUR</i></li>
+            <li>
+              Click the menu item <i>Gather Historical Data</i> in the dialog
+            </li>
+          </ol>
+        </mat-card-content>
+      </mat-card>
+      <mat-card appearance="outlined" class="mb-3">
+        <mat-card-header>
+          <mat-card-title>How do I add a new platform?</mat-card-title>
+        </mat-card-header>
+        <mat-card-content>
+          <ol>
+            <li>Go to the <i>Admin Control</i> panel</li>
+            <li>Go to the <i>Settings</i> section</li>
+            <li>Click on the <i>Add Platform</i> button</li>
+          </ol>
+        </mat-card-content>
+      </mat-card>
+      <mat-card appearance="outlined" class="mb-3">
+        <mat-card-header>
+          <mat-card-title>How do I add a new tag?</mat-card-title>
+        </mat-card-header>
+        <mat-card-content>
+          <ol>
+            <li>Go to the <i>Admin Control</i> panel</li>
+            <li>Go to the <i>Settings</i> section</li>
+            <li>Click on the <i>Add Tag</i> button</li>
+          </ol>
+        </mat-card-content>
+      </mat-card>
       <mat-card appearance="outlined" class="mb-3">
         <mat-card-header>
           <mat-card-title>Which devices are supported?</mat-card-title>