This is very similar to the project I have in Chapter 2 of my new book Computer Science from Scratch [0]. It's also Tiny BASIC without INPUT. I called it NanoBASIC. But it's an interpreter not a compiler. This tutorial is a nice starting point. The chapter is much more comprehensive, so if you want to get into the weeds, I can recommend my own chapter (of course). But it's in Python, not Go. The code is on GitHub[1]. But this tutorial is great too.

0: https://nostarch.com/computer-science-from-scratch

1: https://github.com/davecom/ComputerScienceFromScratch