diff --git a/app/Http/Livewire/Tables/LibraryItemTable.php b/app/Http/Livewire/Tables/LibraryItemTable.php
index c8b6a432..9a5c7ff7 100644
--- a/app/Http/Livewire/Tables/LibraryItemTable.php
+++ b/app/Http/Livewire/Tables/LibraryItemTable.php
@@ -44,6 +44,11 @@ class LibraryItemTable extends DataTableComponent
     public function filters(): array
     {
         return [
+            TextFilter::make(__('By id'), 'id')
+                      ->hiddenFromMenus()
+                      ->filter(function (Builder $builder, string $value) {
+                          $builder->where('library_items.id', '=', $value);
+                      }),
             TextFilter::make(__('By lecturer'), 'lecturer_id')
                       ->hiddenFromMenus()
                       ->filter(function (Builder $builder, string $value) {
diff --git a/app/Observers/BitcoinEventObserver.php b/app/Observers/BitcoinEventObserver.php
new file mode 100644
index 00000000..a6f47a33
--- /dev/null
+++ b/app/Observers/BitcoinEventObserver.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace App\Observers;
+
+use App\Models\BitcoinEvent;
+
+class BitcoinEventObserver
+{
+    /**
+     * Handle the BitcoinEvent "created" event.
+     *
+     * @param  \App\Models\BitcoinEvent  $bitcoinEvent
+     *
+     * @return void
+     */
+    public function created(BitcoinEvent $bitcoinEvent)
+    {
+        if (config('feeds.services.twitterAccountId')) {
+            $this->setNewAccessToken(1);
+
+            $text = sprintf("Ein neues Event wurde eingestellt:\n\n%s\n\n%s bis %s\n\n%s\n\n%s\n\n#Bitcoin #Event #Einundzwanzig #gesundesgeld",
+                $bitcoinEvent->title,
+                $bitcoinEvent->from->asDateTime(),
+                $bitcoinEvent->to->asDateTime(),
+                $bitcoinEvent->venue->name,
+                $bitcoinEvent->link,
+            );
+
+            $this->postTweet($text);
+        }
+    }
+
+    /**
+     * Handle the BitcoinEvent "updated" event.
+     *
+     * @param  \App\Models\BitcoinEvent  $bitcoinEvent
+     *
+     * @return void
+     */
+    public function updated(BitcoinEvent $bitcoinEvent)
+    {
+        //
+    }
+
+    /**
+     * Handle the BitcoinEvent "deleted" event.
+     *
+     * @param  \App\Models\BitcoinEvent  $bitcoinEvent
+     *
+     * @return void
+     */
+    public function deleted(BitcoinEvent $bitcoinEvent)
+    {
+        //
+    }
+
+    /**
+     * Handle the BitcoinEvent "restored" event.
+     *
+     * @param  \App\Models\BitcoinEvent  $bitcoinEvent
+     *
+     * @return void
+     */
+    public function restored(BitcoinEvent $bitcoinEvent)
+    {
+        //
+    }
+
+    /**
+     * Handle the BitcoinEvent "force deleted" event.
+     *
+     * @param  \App\Models\BitcoinEvent  $bitcoinEvent
+     *
+     * @return void
+     */
+    public function forceDeleted(BitcoinEvent $bitcoinEvent)
+    {
+        //
+    }
+}
diff --git a/app/Observers/LibraryItemObserver.php b/app/Observers/LibraryItemObserver.php
new file mode 100644
index 00000000..98320b0c
--- /dev/null
+++ b/app/Observers/LibraryItemObserver.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace App\Observers;
+
+use App\Models\LibraryItem;
+
+class LibraryItemObserver
+{
+    /**
+     * Handle the LibraryItem "created" event.
+     *
+     * @param  \App\Models\LibraryItem  $libraryItem
+     *
+     * @return void
+     */
+    public function created(LibraryItem $libraryItem)
+    {
+        // todo: we can change this later
+        $libraryItem->setStatus('published');
+
+        if (config('feeds.services.twitterAccountId')) {
+            $this->setNewAccessToken(1);
+
+            // http://localhost/de/library/library-item?l=de&table[filters][id]=2
+
+            $text = sprintf("Es gibt was Neues zum Anschauen oder Hören:\n\n%s\n\n%s\n\n#Bitcoin #Event #Einundzwanzig #gesundesgeld",
+                $libraryItem->name,
+                url()->route('library.table.libraryItems',
+                    ['country' => 'de', 'table' => ['filters' => ['id' => $libraryItem->id]]]),
+            );
+
+            $this->postTweet($text);
+        }
+    }
+
+    /**
+     * Handle the LibraryItem "updated" event.
+     *
+     * @param  \App\Models\LibraryItem  $libraryItem
+     *
+     * @return void
+     */
+    public function updated(LibraryItem $libraryItem)
+    {
+        //
+    }
+
+    /**
+     * Handle the LibraryItem "deleted" event.
+     *
+     * @param  \App\Models\LibraryItem  $libraryItem
+     *
+     * @return void
+     */
+    public function deleted(LibraryItem $libraryItem)
+    {
+        //
+    }
+
+    /**
+     * Handle the LibraryItem "restored" event.
+     *
+     * @param  \App\Models\LibraryItem  $libraryItem
+     *
+     * @return void
+     */
+    public function restored(LibraryItem $libraryItem)
+    {
+        //
+    }
+
+    /**
+     * Handle the LibraryItem "force deleted" event.
+     *
+     * @param  \App\Models\LibraryItem  $libraryItem
+     *
+     * @return void
+     */
+    public function forceDeleted(LibraryItem $libraryItem)
+    {
+        //
+    }
+}
diff --git a/app/Providers/EventServiceProvider.php b/app/Providers/EventServiceProvider.php
index 496c0cb3..a531a1ec 100644
--- a/app/Providers/EventServiceProvider.php
+++ b/app/Providers/EventServiceProvider.php
@@ -3,13 +3,17 @@
 namespace App\Providers;
 
 use App\Listeners\AddLoginReputation;
+use App\Models\BitcoinEvent;
 use App\Models\Course;
 use App\Models\CourseEvent;
+use App\Models\LibraryItem;
 use App\Models\Meetup;
 use App\Models\MeetupEvent;
 use App\Models\OrangePill;
+use App\Observers\BitcoinEventObserver;
 use App\Observers\CourseEventObserver;
 use App\Observers\CourseObserver;
+use App\Observers\LibraryItemObserver;
 use App\Observers\MeetupEventObserver;
 use App\Observers\MeetupObserver;
 use App\Observers\OrangePillObserver;
@@ -44,6 +48,8 @@ class EventServiceProvider extends ServiceProvider
         OrangePill::observe(OrangePillObserver::class);
         CourseEvent::observe(CourseEventObserver::class);
         Course::observe(CourseObserver::class);
+        BitcoinEvent::observe(BitcoinEventObserver::class);
+        LibraryItem::observe(LibraryItemObserver::class);
     }
 
     /**