If you take courses leading to a certificate (or degree) you can buy the edumacational edition of Solidworks for only about a hundred ever-so-thin US pesos. It watermarks the 2D drawings, there's some limits on import/export, IIRC, and I think it's one edition back, but other than that it's pretty much full-featured SW almost for free. Don't expect to be able to use the models with the full version without issues, I think that educational edition components 'contaminate' the parts and assemblies so that the whole thing is 'educational' mode. Best regards, Spehro Pefhany