The effect of training courses and schools is actually the same. As for whether it is good or not, it depends on the school you go to. Some schools are very responsible, but others are just the opposite, just to make money. Learning is on your own, whether it's a training class or a school, just to get you started.

You are like a headless fly precisely because you have no foundation. You can ask what you don't understand, but what else can you learn if you don't know what you don't understand?

You should go to a training class or school to learn how to make renderings. Even if you only learn some basics, at least you know what you don't know. You can ask questions You shouldn't even have asked questions before.

I also suggest that you go to the school he introduced to learn hand-drawing for 4 to 5 months, and then consider learning the whole set later. In fact, indoor renderings are all made with 3D software. I guess their company lacks a hand-painted one, so I want you to learn hand-painted and work in their company in the future. This is also a position for you.

When I was studying, I was afraid that I wouldn't find a job in the future, but I knew what I should do when I thought that if I didn't study hard, I wouldn't get paid and I couldn't find a wife without pay.