I've never traveled internationally. I do have my passport already- I'm wondering if I should get a tourist visa or business visa for this. I am trying to stay for at least 3 months in Tanzania, would like to stay for 6. I plan to work while I'm there so I am thinking I need a business visa, but I don't have to work & its my understanding that tourist & business visas have different expiration dates. Also, is it better than I go ahead & order a visa online now or should I wait & do that at the port of entry? Honestly, If you could just tell me anything about traveling to Tanzania that you yourself would need to know & anything helpful I would be so grateful! Thanks!

Always google. you will find links to almost all embassies around the world. find the one that is located closest to you to find out if you require a visa or further information.

Bellow is the tanzanian embassy in the USA but since they are not a part of the passport share, everyone requires a visa to enter.

http://www.tanzaniaembassy-us.org/tzevisa.html

HI Jan'
do apply for the visa(business) are you country of residence its easier/advicable than going to do it on landing.
once you have it you do not need a tourist visa for local travel whilst there.
for the other travel details you requested need to know where you are originating and your nationality plus rough budget for tourist activities + you interests.
davia gn