diff --git a/3 b/3
new file mode 100644
index 000000000..0812f337a
--- /dev/null
+++ b/3
@@ -0,0 +1,19 @@
+https://presentations.clickhouse.com/
+    https://presentations.clickhouse.com/2017-shad/index.html
+
+2024
+Otus - Kafka and ClickHouse of 1:41:20
+    https://www.youtube.com/watch?v=Jp1SEm4UU48
+    ! 49:00 - ClickHouse Kafka Connect Sink
+    ! 52:00 - REST Api for Kafka Connectors
+    ! 1:00:00 - Debezium Docker image for pg
+2023
+ClickHouse - Kita - Modern SQL in 2023 18:00 of 33:05
+    https://www.youtube.com/watch?v=zhrOYQpgvkk
+    ! 18:00 "explain query tree" system query
+ListenIT - What ClickHouse is and Columnt DBs ru of 14:46
+    https://www.youtube.com/watch?v=2b4heaO3U8k
+2018
+YandexForDevelopers - Milovidov - SHAD - 005 - How ClickHouse Works ru 38:00 of 1:56:30
+    https://www.youtube.com/watch?v=vbhSrZxm66E
+    https://habr.com/ru/companies/yandex/articles/273305/
diff --git a/db/nosql/clickhouse/docs/presentations.txt b/db/nosql/clickhouse/docs/presentations.txt
index dfc46e450..37d1eb6ad 100644
--- a/db/nosql/clickhouse/docs/presentations.txt
+++ b/db/nosql/clickhouse/docs/presentations.txt
@@ -8,8 +8,10 @@ Otus - Kafka and ClickHouse of 1:41:20
     ! 52:00 - REST Api for Kafka Connectors
     ! 1:00:00 - Debezium Docker image for pg
 2023
-ClickHouse - Kita - Modern SQL in 2023 2:00 of 33:05
+ClickHouse - Kita - Modern SQL in 2023 20:00 of 33:05
     https://www.youtube.com/watch?v=zhrOYQpgvkk
+    ! 18:00 "explain query tree" system query
+    !   ... run_passes=0/1 select id, value from test_table; 
 ListenIT - What ClickHouse is and Columnt DBs ru of 14:46
     https://www.youtube.com/watch?v=2b4heaO3U8k
 2018