It took me ages to learn the game because I am stupid and had to make like 200 mhelps on the way. (EDIT: I have 147 mhelps in total, checked by a mentor)
When I first began, I played Cullen Disero/Bebe the humans while learning the very basics.
The jobs I did then were Janitor > Cargo > Bartender > Learning to do shit while a Civilian > Xenobiology
After playing a bunch, around the time I learned xenobiology, I also unlocked Drask which then led me to making Kruum.
I then branched off from Xenobiology and learned all of Science. > Then I began to play Chef and understand the basics of CQC and cooking.
After fiddling around and getting bored of Science, I needed to get my hands dirty on a new job, that's when @Miraviel taught me how to be a good medical doctor in one single shift. I then went > Medical Doctor > Coroner and taught myself Surgery through the wiki.
Since then, my usual jobs for Kruum consist of > Chef > Science >Medical > Cargo
I've yet to learn Engineering and Atmospherics but I hope to some day. I don't think I'll ever be security gaming but, maybe in the near future.
Paradise Station is also the only server I've properly played besides Colonial Marines, and honestly I don't see me in the future changing servers at all.