I m a back end developer who is providing rest api services thorough laravel and MySQL. What are the things I need to learn to handle a project backend on my own.

I want to buy a laptop. I got a suggestion like ssd laptops are very fast. But I got confused wether to go for Mac 128ssd or windows 256ssd.
The reason for above comparison is both price are more or less same.
Give me your suggestion please

Code reusing 😂