diff --git a/README.md b/README.md
index 1743945..24feb4d 100644
--- a/README.md
+++ b/README.md
@@ -1,31 +1,35 @@
 # c-rieger.de - install Nextcloud using a shell script
-The initial script (install-nextcloud.sh // install-nextcloud-debian.sh) will install your self hosted Nextcloud within few minutes fully automated. Your server will consist of:
+The initial script called install-nextcloud-ubuntu.sh or install-nextcloud-debian.sh (depending on your server os) will install your self hosted Nextcloud within few minutes, fully prepared for Ubuntu 18.04 or Debian 9.6 Stretch environments and will consist of:
 
     Fail2Ban (Nextcloud and SSH jails)
     MariaDB 10.3
-    Nextcloud 15 (latest)
-    NGINX 1.15.8 TLSv.1.3
-    OpenSSL 1.1.1
+    Nextcloud 15 latest
+    NGINX 1.15.8
+    OpenSSL 1.1.1 + TLS v. 1.3
     PHP 7.3
     Redis-Server
-    self signed or Let's Encrypt SSL using the ssl-certificate-ubuntu.sh or ssl-certificate-debian.sh script
+    self signed or Let’s Encrypt SSL using the second script
     UFW (22, 80, 443)
 
-The only precondition for the install-nextcloud.sh and install-nextcloud-debian.sh shell script is to utilize Ubuntu 18.04 LTS or Debian Stretch 9.x as your on-prem server OS. Optionally you may request your ssl certificate from Let's Encrypt by issuing the second script called ssl-certificate-ubuntu.sh or ssl-certificate-debian.sh.
+Requirements:
 
-Ready to go? Let's start:
+    Ubuntu 18.04 or Debian 9.6
+    Please remove already installed packages of NGINX, PHP, MariaDB and Redis first or start with a new server os!
 
-Find out more information: <a href="https://www.c-rieger.de/nextcloud-using-one-shell-script/" target='_blank'>Build your Nextcloud Server using shell scripts only</a>
+    apt purge <package> -y && apt autoremove -y
 
 Beyond that you will find additional scripts at /usr/local/src/install-nextcloud/
 
-    fail2ban.sh
-    optimize-debian.sh and optimize-ubuntu.sh
-    restart.sh
-    ssl-certificate-debian.sh and ssl-certificate-ubuntu.sh
-    ssl-renewal.sh
-    upgrade-debian.sh and upgrade-ubuntu.sh
+    /maintainance/fail2ban.sh
+    /maintainance/ubuntu/optimize-ubuntu.sh
+    /maintainance/debian/optimize-debian.sh
+    /maintainance/restart.sh
+    /maintainance/ssl-renewal.sh
+    /maintainance/ubuntu/upgrade-ubuntu.sh
+    /maintainance/debian/upgrade-debian.sh
+    /ssl/ssl-certificate-debian.sh
+    /ssl/ssl-certificate-ubuntu.sh
 
-to optimize and maintain your Ubuntu system easily.
+to optimize and maintain your system easily. Ready to go? Let’s start:
 
 Carsten Rieger IT-Services (c-rieger.de)