Autumn raspberries

Hi there, in woolies I bought some raspberry canes, autumn fruiting. I only got 1 pack which had 4 canes in because that was all the had left. I wanted 2 really.
Is this enough or should I try and get some more, also do you get fruit on it next year? I don't know about fruit at all!

With the Autumn varieties (are they Autumn Bliss?),you get fruit on the same year's growth,(or should do), so you should get fruit this year. When they've finished fruiting you chop out all the canes and let new growth come next year.

These can spread like wildfire, so even if you've only got 4 now, then can ultimately be split up.