How can i start with the basiccard

Hello, i´m a novice programmer and i´m a beginner with the basiccard, i've tried to run a little program in the basiccard but i could not do it, i don´t know why, i coul save the .img in the card but noy run it, i only want to know how can i start with this. This is the thest program, if someone could help me with te first step I would be grateful

Command &H20 &H01 prueba (S$)
Dim i As Integer
Dim contador As Integer
Dim entrada As Integer
Dim algo As String

entrada= 1
For i=1 To 10 Step i+1
contador=contador+entrada
Next i

Print contador
End Command

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