Workaround for MS Excel If-Statement

I'm a student and I've bought Microsoft Home-Office. I was not aware that they blocked featured like If-Statements in Excel.

I've tried to write a custom functions in VBA but it seems as if the limited the functions in that programm as well...

So my question is, does someone know how to work around these limitations? I'd simply like to be able to use key features like an If-Statement...