DevOps tools and automation of manual processes
Alright... you're not going to implement every tool or automation at the same time, as some of them have quite deep impact on your development processes (and I daresay, development culture). Take a step-by-step approach; research each individual tool. Figure out what it actually does, what it is useful for. Play around with them, install them locally, go through tutorials, and see what they do, or whip up a quick VM somewhere (AWS, etc.) if you need more than one.

Then, take a look at the work your team/company is doing right now. What are the manual process you wish to automate? Ideas should spring up pretty quickly.

A nice, simple(-ish), bog-standard stack to start out with:


Vagrant to automate setting up VMs for your developers, or test environments.
Ansible to automate configuration management (relatively lightweight compared with Chef or Puppet)
Gitlab or Jenkins as your automated CI/CD driver, mostly depending on taste
Docker for your containers
docker-compose, docker-swarm, Kubernetes, OpenShift to automate container deployment
ELK or Splunk for your logging/monitoring, again depending on taste


Have fun!