diff --git a/db/nosql/mongo/tools/studio3t.txt b/db/nosql/mongo/tools/studio3t.txt
index d1d70d58f..7b47112d7 100644
--- a/db/nosql/mongo/tools/studio3t.txt
+++ b/db/nosql/mongo/tools/studio3t.txt
@@ -1,4 +1,7 @@
 https://studio3t.com/free/
+https://blog.robomongo.org/studio3t-free/
+https://studio3t.com/download-studio3t-free/
+
 https://studio3t.com/knowledge-base/articles/installation/#studio-3t-for-linux-e-g-ubuntu-debian
     https://www.youtube.com/watch?v=LoslUjtaNp8
 https://studio3t.com/knowledge-base/articles/how-to-install-studio-3t-on-linux/
@@ -10,6 +13,9 @@ https://www.youtube.com/@Studio3T
 https://www.youtube.com/studio3t
 
 https://studio3t.com/knowledge-base/
+!!!
+https://studio3t.com/academy/
+    https://studio3t.com/academy/courses/mongodb-101-getting-started/
 
 https://studio3t.com/download/
     studio-3t-linux-x64.tar.gz
diff --git a/pl/cross/api/light4j.txt b/pl/cross/api/light4j.txt
new file mode 100644
index 000000000..3bff9d528
--- /dev/null
+++ b/pl/cross/api/light4j.txt
@@ -0,0 +1,4 @@
+https://www.baeldung.com/light-4j
+
+2024
+    https://www.youtube.com/watch?v=MKHAPPiHTkg