Not knowing where you have started leaves some questions. Have you checked and filled the Master cylinder with brake fluid? Simple , but vital. Next if you have done that previously have you pumped the brakes(5-15 times to start with) and watched every two to three pumps whether the fluid level is going down in the master cylinder. Make sure you replace the cover every time between checking as fluid may at times squirt back up. Let me/us know where you are at and i'll go on. Might be able to scan you a copy of the service manual if you don't have one. It would be a really good idea for you to get one.