Upvote:4
(disclaimer, I've never been there)
Have a look at (and related pages): http://burningman.org/event/preparation/getting-there-and-back/
and http://survival.burningman.org/your-survival-in-brc/survival-checklist/
Black Rock is in the middle of the desert and you need to be self-sufficient or you will not enjoy your stay
Depending on your involvement in the event, you might need to rent a van (or something similar) to haul everything you need (water, water, food, water, food and more water...).
As for specifics, you should land in San Francisco it will be easier (and maybe cheaper) to rent a van and buy everything you need.
Good luck and Have fun.