Season Greetings to this wonderful family. Please all, I come seeking for advice on what step to take to help me grow and build my skills in this field.

I was employed in a Telecom company and thus far, we use Linux OS, SQL Database, Scripting to carry out most of our jobs. I am a complete novice in this field, in fact, I studied a different course, but I desire to thrive in this field. A colleague suggested I take:

ITIL training
Oracle Database Training and
Project Management course.

However, I do not know where or how to go about this or if you guys have a better idea, I am open for suggestions.
I would be very glad to have your professional counsel on this.

Regards.