Add multilingual language and systems learning tracks

ceb/basic-practice-20261101/lesson-1/main.bas

@@ -0,0 +1,10 @@
+10 DIM M(3)
+20 LET M(1)=1
+30 LET M(2)=2
+40 LET M(3)=3
+50 LET T=0
+60 FOR I=1 TO 3
+70 LET T=T+M(I)
+80 NEXT I
+90 PRINT T
+100 SYSTEM