diff --git a/doc/bootable-usb-drive.md b/doc/bootable-usb-drive.md
index 51fa567..793b075 100644
--- a/doc/bootable-usb-drive.md
+++ b/doc/bootable-usb-drive.md
@@ -19,4 +19,17 @@ sudo umount /dev/<tbd>
 sudo mkfs.vfat /dev/<tbd>
 ```
 
-* [create bootable USB drive](https://www.pragmaticlinux.com/2021/03/create-a-bootable-usb-drive-from-a-linux-iso-image/)
+* identify the device name
+```
+lsblk -p | grep "disk"
+```
+
+* make sure the USB drive is not mounted
+```
+sudo umount /dev/<tdb>
+```
+
+* write the ISO file to the USB drive
+```
+sudo dd if=[ISO FILE] of=[DEVICE NAME] bs=4M conv=fdatasync status=progress
+```
\ No newline at end of file
diff --git a/doc/node.md b/doc/node.md
index 896edf8..e3a58d8 100644
--- a/doc/node.md
+++ b/doc/node.md
@@ -12,6 +12,31 @@ sudo apt update
 sudo apt-get install nodejs npm --no-install-recommends
 ```
 
+## Using NVM Update
+
+* configure Node.js: [Here](https://github.com/nvm-sh/nvm) we find a bash script to manage multiple active node.js versions
+```
+node -v
+which node
+less ~/.profile
+touch ~/.profile
+chmod 700 ~/.profile
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
+cat ~/.profile
+command -v nvm
+nvm -v
+. ~/.profile
+nvm -v
+command -v nvm
+echo $NVM_DIR
+nvm version-remote --lts
+nvm ls-remote| grep 'Latest LTS'| grep v10
+nvm i <lts>
+which node
+/usr/bin/node -v
+node -v
+```
+
 ## Using NVM
 
 * install curl command-line utility