Through this video I have demonstrated the following steps:
1. Removing Jenkins from the Laptop/Desktop of Windows10 OS.
2. Installed it as fresh setup on the same machine of Windows10 OS.
3. Played around with 2 jobs creation through Build now.

Also visit:

https://vskumar.blog/2018/02/26/15-devops-how-to-setup-jenkins-2-9-on-ubuntu-16-04-with-jdk8/

https://vskumar.blog/2018/03/03/17-devops-working-with-git-on-ubuntu-16-04-vm/