many teach books are in v2.x.x
if i start with v3.0 ,i would be confused,because i dont know the codes in teach book did work.
but i really want to start with v3.0,how should i do??
many teach books are in v2.x.x
if i start with v3.0 ,i would be confused,because i dont know the codes in teach book did work.
but i really want to start with v3.0,how should i do??