Next Spring’s crops

Next Spring’s crops

I live in the southern hemisphere, so it's autumn here and time to get thinking on what to plant this Spring. I grew potatoes (failed, planted too late), tomatoes and cucumbers, and I've read that you shouldn't plant tomatoes in the same soil more than once every three years, and you shouldn't plant potatoes in soil that's previously had tomatoes in it. So what should I be looking at planting in that soil? And what should I plant where the cucumbers were?
Volunteer ID, Pictures!

Volunteer ID, Pictures!

My Yard.

My Yard.

Plant Name

Plant Name

Hi from Russia

Hi from Russia

Porn!

Porn!

Weed ID Please

Weed ID Please