Gate Way to the Kruger
Nelspruit is a large town with good facilities for preparing a tour of the Kruger National Park. There are plenty of backpacking options for accomodations as well as shops for food and camping gear as well as any electronic stuff you may need. Nelspruit is a 45 minutes drive to the Melalane Gate and about 1 hour from Phabeni Gate.
Here is a link to my Kruger Page:
Kruger National Park