One of our toilets' tanks takes forever to fill. And it seems to have a leak because it keeps on filling forever. Currently we have the water to it shut off and it is out of use. I want to fix it. I believe I need to change the entire system that's inside the tank. Can you tell I have never done any plumbing repair before? From the attached image can you tell me what do I need to replace? What tools I will need? Any other tips?
(I am on a DIY roll today. I have tasked myself to fix two other plumbing issues at our home. If you want to help, please click on my name and see my other two questions. Thanks.
Thank you for your help.