As zeldarules28 said, making a unit from scratch can be a bad idea if you're new. While I agree with this to some extent, my opinion is that you shouldn't make a unit from scratch for the purpose of getting the unit. Creating a unit from scratch as an experiment to learn how things are connected is very useful though.
If you still want to try creating one from scratch, you could try out this tutorial that I wrote. It's long, but it's got positive feedback and it should be relatively up to date. I update parts every time someone tells me there's something outdated.
One reason that you might not find some of the buttons described in a tutorial is because the tutorial might've forgot to tell you what options to use. Mine does, so it shouldn't be a problem.
As zeldarules28 said, making a unit from scratch can be a bad idea if you're new. While I agree with this to some extent, my opinion is that you shouldn't make a unit from scratch for the purpose of getting the unit. Creating a unit from scratch as an experiment to learn how things are connected is very useful though.
If you still want to try creating one from scratch, you could try out this tutorial that I wrote. It's long, but it's got positive feedback and it should be relatively up to date. I update parts every time someone tells me there's something outdated.
One reason that you might not find some of the buttons described in a tutorial is because the tutorial might've forgot to tell you what options to use. Mine does, so it shouldn't be a problem.