diff --git a/blockchain/people/alefman.txt b/blockchain/people/alefman.txt
new file mode 100644
index 000000000..72566c43c
--- /dev/null
+++ b/blockchain/people/alefman.txt
@@ -0,0 +1 @@
+https://www.youtube.com/@alefman_vladimir/playlists
diff --git a/os/linux/debian/flavors/rolling/mauna.txt b/os/linux/debian/flavors/rolling/mauna.txt
new file mode 100644
index 000000000..be9604504
--- /dev/null
+++ b/os/linux/debian/flavors/rolling/mauna.txt
@@ -0,0 +1,6 @@
+https://maunalinux.top/
+https://maunalinux.top/download/
+
+https://www.opensourcefeed.org/distribution/amarok
+
+https://magazine.maunalinux.top/
diff --git a/pl/java/libfws/spring/docs/conference.txt b/pl/java/libfws/spring/docs/conference.txt
index 52fa9bf35..7b4731f4f 100644
--- a/pl/java/libfws/spring/docs/conference.txt
+++ b/pl/java/libfws/spring/docs/conference.txt
@@ -1,3 +1,8 @@
+2023
+Spring Office Hours
+https://www.youtube.com/playlist?list=PLgGXSWYM2FpNjXSFUQfFyXmFk3ENUZMGL
+Spring One
+https://www.youtube.com/playlist?list=PLgGXSWYM2FpPrAdQor9pi__EV1O69Qbom
 2018
 Spring One
 https://www.youtube.com/playlist?list=PLAdzTan_eSPQsR_aqYBQxpYTEQZnjhTN6