What exposure do puppies need during the socialisation period?

Im not an expert on the subject, but from my experience with my puppy and socialising him ive found that walks in the City are very benefitial because there is so much for him to hear and see and smell and if he sneaks it in, to taste too.

Ive also taken him around to a few construction sites and places with lots of noisy children, ie: Time Zone, sports matches and he seems very at ease around anything we can throw at him now.

I would suggest taking your pupp with you anywhere you can, so that he can get as much socialisation as possible, i am also always looking out for puppy socialisation events like puppy groups, dog shows.

Sorry i didnt really give anything specific, but just remember if hes seen it before theres lesss chance of a negative reaction to a situation when he's older.