diff --git a/README.md b/README.md
index 10e20a5..68ad417 100644
--- a/README.md
+++ b/README.md
@@ -1607,6 +1607,7 @@ See also [Infrastructure](#infrastructure)
   3. Use the following command to get its public IP address:  `curl http://169.254.169.254/latest/meta-data/public-ipv4`
 * [MorganGeek](https://github.com/MorganGeek/bookmarks/blob/master/cheat/network.md) - My Network cheatsheet 
 * [MorganGeek](https://github.com/MorganGeek/bookmarks/blob/master/cheat/aws.md) - My AWS cheatsheet 
+* [Pēteris Ņikiforovs](https://peteris.rocks/blog/persisting-state-between-aws-ec2-spot-instances/) - (2017) Persisting state between AWS EC2 spot instances | Persisting state between AWS EC2 spot instances using Docker on an external volume
 
 ## Bitbucket
 * [Atlassian Docs](https://developer.atlassian.com/stash/docs/latest/how-tos/updating-build-status-for-commits.html) - Updating build status for commits
@@ -1880,6 +1881,9 @@ See also [Infrastructure](#infrastructure)
 * [jessfraz/dockfmt](https://github.com/jessfraz/dockfmt) - Dockerfile format and parser. Like `gofmt` but for Dockerfiles.
 * [GoogleContainerTools/jib](https://github.com/GoogleContainerTools/jib) - 🏗 Build container images for your Java applications.
 
+> Tips
+* [Pēteris Ņikiforovs](https://peteris.rocks/blog/persisting-state-between-aws-ec2-spot-instances/) - (2017) Persisting state between AWS EC2 spot instances | Persisting state between AWS EC2 spot instances using Docker on an external volume
+
 ## Gradle
 * [Viktor Farcic](https://technologyconversations.com/2014/06/18/build-tools/) - (2014) Java Build Tools: Ant vs Maven vs Gradle
 * [Spring Initializr](http://start.spring.io/) - bootstrap your application now : Generate Maven / Gradle projects with Groovy / Java / Kotlin and Spring Boot
@@ -3092,7 +3096,8 @@ rpm --rebuilddb
 * [Senthil Kumar aka SK](https://www.ostechnix.com/random-one-liner-linux-commands-part-1/) - (2018) Some Random One-liner Linux Commands [Part 1]. **Bonus** : [Part 2](https://www.ostechnix.com/random-one-liner-linux-commands-part-2/), [Part 3](https://www.ostechnix.com/random-one-liner-linux-commands-part-3/), [Part 4](https://www.ostechnix.com/some-random-one-liner-linux-commands-part-4/)
 * [Bash-Oneliner](https://onceupon.github.io/Bash-Oneliner/) - A collection of handy Bash One-Liners and terminal tricks for data processing and Linux system maintenance. **Bonus** : [GitHub repository](https://github.com/onceupon/Bash-Oneliner)
 * [crontab guru](https://crontab.guru/) - The quick and simple online editor for testing cron schedule expressions 
-
+* [Pēteris Ņikiforovs](https://peteris.rocks/blog/htop/) - (2017) htop explained | Explanation of everything you can see in htop/top on Linux
+ 
 ## Emacs
 * [emacs-tw/awesome-emacs](https://github.com/emacs-tw/awesome-emacs) - list of useful Emacs packages, libraries and others.
 * [Sam Whited](https://blog.samwhited.com/2015/04/the-dharma-of-vi/) - (2015) The Dharma of Vi