Well there are a few choices of starters you can get...
Standard Traxxas EZ Start system:
you can either get this
http://www2.towerhobbies.com/cgi-bin...&I=LXDAK5&P=ML
this
http://www2.towerhobbies.com/cgi-bin...&I=LXJA83&P=ML and this
http://www2.towerhobbies.com/cgi-bin...&I=LXD548&P=ML
or
Pullstart:
you can get this
http://www2.towerhobbies.com/cgi-bin...&I=LXDGG4&P=ML and one of these
http://www2.towerhobbies.com/cgi-bin...?&I=LXFBH8&P=7
I find the pullstart alot easier, because you dont have to charge batteries before running your car...
or
Starter box:
one of these
http://www2.towerhobbies.com/cgi-bin...&I=LXRS98&P=ML and one of these
http://www2.towerhobbies.com/cgi-bin...?&I=LXFBH8&P=7
This would be a good choice if you are planning on racing, but if just bashing, like crash said in another post, you wont want to carry it around with you all the time... and it tends to be alittle out of somes price range...
It is all personal prefrence on which starter to use, but many find the pullstart a good choice