I need help identifying these plants please.

Hello,

The first one is a summer annual I think.

The second is a type of hardy geranium, it is so small and lovely. It never fails to come back every year.

The third I haven't a clue, maybe its a type of rudbeckia.

Can I collect seeds from any of these?

 

The second photo reminds me of one of my father's favourite alpine geranium - ballerina, although it is hard to tell without any idea of scale.