You can buy condoms from pharmacies, department stores, family planning clinics, some gynaecologists, and other outlets that sell condoms over the counter. You can just walk-in ask for your favourite brand and take it by paying for it. You can also buy condoms online.
There are number of websites that sell condoms online. You can just place an order for your favourite brand and get it delivered in discreet packaging at your address.
You can try your first purchase with www.condombazaar.com, no.1 online platform for condoms. Have a nice time.