diff --git a/db/sql/features/window-functions.txt b/db/sql/features/window-functions.txt
index f40ff81a1..f14ca0d36 100644
--- a/db/sql/features/window-functions.txt
+++ b/db/sql/features/window-functions.txt
@@ -1,6 +1,8 @@
 https://www.sqltutorial.org/sql-window-functions/
 
 2024
+Otus - Windows Functions for Data Analysis ru 0:00 of 1:07:42
+    https://www.youtube.com/watch?v=dEEm8rDQlAc
 REUDataScienceClub - Window Functions 0:00 of 15:04
     https://www.youtube.com/watch?v=L6O53mjBCzo
 2023
diff --git a/pl/cross/methodologies/architecture/diagrams/c4/docs/presentations.txt b/pl/cross/methodologies/architecture/diagrams/c4/docs/presentations.txt
index 9c0a3b255..4e5ad30d8 100644
--- a/pl/cross/methodologies/architecture/diagrams/c4/docs/presentations.txt
+++ b/pl/cross/methodologies/architecture/diagrams/c4/docs/presentations.txt
@@ -10,3 +10,6 @@ NDCConferences - C4 models as code - Simon Brown - NDC Oslo 2023 0:00 of 1:00:01
     https://www.youtube.com/watch?v=4HEd1EEQLR0
 Devoxx - C4 models as code By Simon Brown 0:00 of 51:14
     https://www.youtube.com/watch?v=LYzOc7vI-Uo
+2022
+Otus - Arch as a Code ru 0:00 of 1:28:17
+    https://www.youtube.com/watch?v=MWxqtzhlPYc
diff --git a/pl/java/libfws/spring/boot/features/ex-err.txt b/pl/java/libfws/spring/boot/features/ex-err.txt
index fc424f0a7..c28b60dda 100644
--- a/pl/java/libfws/spring/boot/features/ex-err.txt
+++ b/pl/java/libfws/spring/boot/features/ex-err.txt
@@ -5,6 +5,8 @@ https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto.appl
 baeldung
 https://www.baeldung.com/exception-handling-for-rest-with-spring
 2024
+Otus - Exceptions from Java to Spring 6:00 of 2:15:46
+    https://www.youtube.com/watch?v=dsSFmPeUezY
 BusyCoderAcademy - 5. Spring Boot Rest Project Employee Mgt Application with Ex handling Validation||Rajeev Gupta of 1:31:30
     https://www.youtube.com/watch?v=XTk6fz1i9UA
     ! package for exceptions