kiwi's travelling through California and Nevada 30/5-2/6

Hey everyone, ive been a memeber for a couple of years now, live in the waikato, New Zealand. Finally traveling to California tonight and cant wait! couple of questions.... is there any grow tours in California or Nevada? and anywhere we could purchase seeds and pot? and one of those pollen presses and flower trimmer bowls..... over the counter? We are not to clear about how to purchase it without a card? any input would be a big help.

also if anyone has any recommendations on things to do for too guys first time in the states our ears are open. again, mate, I cant wait for this