diff --git a/db/sql/docs/training.txt b/db/sql/docs/training.txt
index 576e91feb..ad05d969d 100644
--- a/db/sql/docs/training.txt
+++ b/db/sql/docs/training.txt
@@ -5,3 +5,6 @@ https://sqltest.online/ru/books
 https://www.sql-ex.ru/
 
 https://sql-academy.org/ru/trainer
+
+https://www.sqlteaching.com/
+https://github.com/rhc2104/sqlteaching
diff --git a/nontech/politics/clubs/masonery.txt b/nontech/politics/clubs/masonery.txt
index 35491a391..54616bc23 100644
--- a/nontech/politics/clubs/masonery.txt
+++ b/nontech/politics/clubs/masonery.txt
@@ -4,6 +4,7 @@ researchers
 2025
 OutOfFormat - They Try to Inspire us that This is Edu Org 1:00 of 46:38
     https://www.youtube.com/watch?v=6I5sIseuCO0
+    ! 5:00 John Di - founder of Mi-5/6, before Newton
 Panarin - Yalta II of 1:15:17
     https://www.youtube.com/watch?v=2iHjl-mFpOU
     ! Surarev Tower - Lefort, Gordon, Bruce
diff --git a/science/data-science/cheatsheets.txt b/science/data-science/cheatsheets.txt
new file mode 100644
index 000000000..95fb6126d
--- /dev/null
+++ b/science/data-science/cheatsheets.txt
@@ -0,0 +1 @@
+https://github.com/FavioVazquez/ds-cheatsheets