Jordan, what tclederman referenced to is excellent! Please read and try your best to absorb the information. If you don't understand something, post a question.
I asked you about what the brake pedal was doing and you confirmed that it was easily pushed to the floor. No pressure = no braking!!
I know your young, but please, slow down and take the time to absorb what people are saying to you in this thread. You must understand that there are folks here that know a whole lot of stuff about old trucks and such. Many of them are old enough to easily be your grandfather and have had many experiences revolving around the repair and safe maintainance of vehicles. That is a good thing!
I have no problem with a very interested 13 year old novice checking out a brake system on an old truck as long as he "LISTENS" to what people here are telling him. HOWEVER, he needs the watchful eye of an experienced family member to help guide him along the way. Someone has to "physically" be there to get across to you what we tell you through this website. Which leads me to a very important question..."Jordan, do you have a good family friend who is interested as much as you are in the restoration of your truck?" The only reason I ask is because you are communicating over the Internet and the transfer of information to you from very experienced people could easily be misunderstood by you because you are so young. At 13 you really need a close local family friend who will also help guide and physically show you what issues need to be addressed and how to solve them. You cannot do this alone!