what do I need to start?

Obviously the first is MONEY. Robots can get expensive. A skilled roboticist can build a robot for next to nothing ($50, for example). He would often have collected enough stuff over the years that he would not have to go and buy most parts. He also would know how to build his parts instead of buying them pre-made, as well as have the skills to improvise. However the beginner does not have these options. You can make most of your robot out of parts in your house, but don't expect to make your first robot McGyver style with just rubber bands and toothpicks. Expect to spend good money for your first 2 or 3 robots. About $100-$200 minimum on your first robot. Ask your parents for it, tell them its educational or something. Tell them you can win money in contests to pay them back. Tell them it will help you get into your university of choice or get you that neat robotics internship. Tell them it will keep you off the streets or from doing drugs. Get a freakin job! You can also apply for grants at your school or university, and even ask companies for money. Tell them their donation gives them tax breaks or something. I have raised $4k+ for all my robots together. I even know one guy who got a $20k donation for a single robot! Your future robots will become more affordable as you become more skilled and have more useful parts around your place. That is another thing, find a place to build your robot. Join a robotics club. Often members will loan you parts, tools, equipment, and that ever priceless help and advice you will need. I remember asking a half dozen people for help before even starting my first robot. You should also read my tutorial on how to pay for robots. Ok I got my bling money, now lets spend it!..............(click here)