how similar are Afrikaans and Dutch in terms of grammar?

I want to learn German, but I already speak Afrikaans fluently so I decided to learn Dutch first and then German. I figured this because Dutch seems to have more in common with German than Afrikaans has with German, and it would get me more comfortable using more of the same words if I know both Dutch and Afrikaans.

How similar/how different are Afrikaans and Dutch in terms of grammar, and if anyone here knew afrikaans and then learnt dutch, are there any things that tripped you up particularly that I should watch out for?