Welcome Anyas.
Here's what I did a few years ago when my son entered Automotive school.
He was probably about your age and I wasn't sure if he would like the profession ..or not. The school gave us 2 choices for tools (to be purchased through them) and both were 2 drawer hand carry boxes with the absolute basics. A) NAPA set for 1300.00. B) Snap On set for 2300.00.
Both sets were very similar(and lacking) in content.
I told them that I would be putting together my sons set.
The administrator looked terribly perplexed and said that he had never heard of that before....................
He worried that my son would not have everything he needed. ........................

I told him not to worry.
I bought one of these at the flea market for 20 bucks:
I filled the box with quality used tools of both U.S and European origin that I had gathered over the years. All the basics in the 3 drive sizes and all conceivable specialty tools that a young mechanic would need.
Granted, the box was bursting and weighed north of 60 lbs.
While he was in school his box was constantly borrowed from because the other guys didn't have what they needed in their school sets. He told me many times that he was surprised to find the tools that he needed in that box....almost every time. I added here and there when he came home on weekends.
I had $150.00 in that toolset.... It was all top quality, though some were 40 years old...

.
Here's the kicker:
As kids dropped out of the course for any number of reasons, my son bought up each 2300.00 Snap On toolset for an average of 300.00 apiece (he worked in local shops while going to school there).
He ended up with 3 or 4 SO toolsets and still uses them every day.
He is a BMW Cert. Master Tech/ASE Master and has a full shop at home too.
He bought a big used Cornwell bench box for cash.
He bought a nice used car..cash.
Loves the automotive business and at 22 bought his own home.
I would honestly suggest that you buy one of the larger Craftsman toolsets when on sale which works out to about 1.00 a tool. They will work just fine.
Find a nice used carry box and put that stuff in it. Add extras as you can.
Concentrate on the learning, not the flash.
If you knew my particular background in tools, it might be considered..Blasphemy.......but true.
Anyas, it is easy to become quickly jaded on a tool forum like this one. Lots of knowledgeble folks that can articulate well on the various subtleties of any number of brands and tool types. You will do well to get just what you need in good quality tools w/o spending much money right now. Learn to recognize good tools by brand (there are only a hundred or so brands to memorize.......) and don't get too caught up on what us ponchy, middle aged guys think is "The Best". If you like the business, You will soon be telling US what works and what doesn't!

Rob