diff --git a/os/linux/arch/flavors/cachyos.txt b/os/linux/arch/flavors/cachyos.txt
index 4968f962b..cacb01942 100644
--- a/os/linux/arch/flavors/cachyos.txt
+++ b/os/linux/arch/flavors/cachyos.txt
@@ -2,3 +2,9 @@ https://cachyos.org
 https://github.com/cachyos
 https://github.com/CachyOS/linux-cachyos
     Archlinux Kernel based on different schedulers and some other performance improvements. 
+
+https://cachyos.org/blog/
+
+2023
+LinuxShelf - CachyOS Review 13:00 of 33:31
+    https://www.youtube.com/watch?v=29FrK-Ri8t8
diff --git a/os/linux/rh/fedora/inst/after-inst.txt b/os/linux/rh/fedora/inst/after-inst.txt
index ac11d3e87..4981823cc 100644
--- a/os/linux/rh/fedora/inst/after-inst.txt
+++ b/os/linux/rh/fedora/inst/after-inst.txt
@@ -4,6 +4,10 @@ mise i
     yadm, neovim
     fzf, fd, ripgrep, lsd, bat, delta
 
+/etc/dnf/dnf.conf
+    max_parallel_downloads=10
+    fastestmirror=1
+
 ls /etc/dnf/plugins/
     corp.conf
     corp.d/
@@ -39,6 +43,7 @@ https://docs.fedoraproject.org/en-US/quick-docs/rpmfusion-setup/
 2024
 KskRoyal - 10 Things You MUST DO After Installing Fedora 40 (2024) 0:00 of 15:18
     https://www.youtube.com/watch?v=XAJsscjoXMw
+    https://kskroyal.com/10-important-things-to-do-right-after-installing-fedora-40/
 https://www.linuxcapable.com/install-telegram-on-fedora-linux/
     sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
     sudo dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
diff --git a/os/linux/tools/monitoring/missioncenter.txt b/os/linux/tools/monitoring/missioncenter.txt
new file mode 100644
index 000000000..6d3280c83
--- /dev/null
+++ b/os/linux/tools/monitoring/missioncenter.txt
@@ -0,0 +1,4 @@
+https://missioncenter.io/
+https://gitlab.com/mission-center-devs/mission-center
+
+https://github.com/flathub/io.missioncenter.MissionCenter
diff --git a/os/x-ui/de/gnome/ext/extensions.txt b/os/x-ui/de/gnome/ext/extensions.txt
index ccd1b204e..facb65da5 100644
--- a/os/x-ui/de/gnome/ext/extensions.txt
+++ b/os/x-ui/de/gnome/ext/extensions.txt
@@ -1,5 +1,8 @@
 https://extensions.gnome.org/
 
+2025
+https://kskroyal.com/top-10-must-install-best-gnome-extensions/
+    https://www.youtube.com/watch?v=IedxEbwpjfs
 2021
 https://linuxiac.com/best-gnome-shell-extensions/
 https://linuxiac.com/install-gnome-shell-extensions/
diff --git a/pl/java/docs/courses.txt b/pl/java/docs/courses.txt
index 7b12bddb0..e8994c2c5 100644
--- a/pl/java/docs/courses.txt
+++ b/pl/java/docs/courses.txt
@@ -15,6 +15,8 @@ freeCodeCamp - Java Programming for Beginners – Full Course 0:00 of 4:10:59
     https://www.youtube.com/watch?v=A74TOX803D0
 CSC - Valeev - Java Programming ru of 10 parts
     https://www.youtube.com/playlist?list=PLlb7e2G7aSpTCB2OxGlezpgOXwq4xer7Z
+    p14 - What is Inside JVM
+        https://www.youtube.com/watch?v=mRjC0RaOk4A
     p13 - concurrent collections
         https://www.youtube.com/watch?v=AvsJ6qWmwls
         ! 35:00 - skip-list !!!