You ask for help and then say but don't tell me to do that. It isn't really helpful.
If you want to do the job properly you will need to have a database and a method of interacting with it.
You could probably fudge something together with a flat file and some javascript BUT it is a fudge and will be far from ideal.
Use this as a learning experience and add php and mySQL to your skill set. There are pre-built scripts available that will get you most of the way to what you want (take a look at HotScripts or similar). Examine the code and understand what it is doing and then tweak it to do exactly what you want, this is a great way of learning. There are also lots of videos on YouTube with code examples that will help with your site development.
If you want to do the job properly you will need to have a database and a method of interacting with it.
You could probably fudge something together with a flat file and some javascript BUT it is a fudge and will be far from ideal.
Use this as a learning experience and add php and mySQL to your skill set. There are pre-built scripts available that will get you most of the way to what you want (take a look at HotScripts or similar). Examine the code and understand what it is doing and then tweak it to do exactly what you want, this is a great way of learning. There are also lots of videos on YouTube with code examples that will help with your site development.