Oh no! I’m not insulted and it’s not stupid. I’m just happy you want to watch it because the show is brilliant!
Well in Australia Doctor Who comes on ABC2 (they’re currently airing re runs), it’s BBC in the UK but I’m guessing you’re not from the UK because I just assume all British people know Doctor Who and I’m not sure about other countries.
You can watch all the episodes online, I recommend starting from Series 1 with Christopher Eccleston as the Doctor.
There are a lot of sites out there but you can try this one
http://watchseries.eu/serie/doctor_who
Hope you like it!