BASIC was my first language too, but LOGO was the first language I attempted to make an interpretor for (also, incidentally, LOGO was the first language I took

BASIC was my first language too, but LOGO was the first language I attempted to make an interpretor for (also, incidentally, LOGO was the first language I took a class for, just for fun - something Radio Shack offered for the Color Computer, which was the machine I owned).