I wasn't sure in which topic to post this, but I'm hoping to do a nice photography trip this summer, and I'm hoping to get some pointers here

. I've seen some nice sites that offer photography trips but i don't really know them.
I'm looking for a trip which has the following:
-I have to be able to learn a lot (the most important), so it should preferably have workshops and lessons.
-It has to be focused on wildlife and landscape, and "preferably" in Africa.
-The duration should be at least a month.
-I prefer as cheap as possible and I don't mind chipping in on luxury. In fact, i'll sleep in caves and eat tree-bark if it'll make my trip affordable.
I hope anyone here who has some experience with trips like this will be able to give me some advice.