If you want to make a full application in php, then first of all try to find out the SDLC for the project. Then try to make a design of the blood bank system. What type of menus you want to include into your application.Then make a directory of Parent-child category. Then connect it to each other. Prepare some contents to follow. These are the starting of any project development. If you don't know coding then learn it with some small project like login system...like that. Believe in yourself. Don't copy and paste the codes available . Have faith in you and always remember practice makes perfect. Best of Luck.