How to write a bot (service) for VKontakte?

Question

Programming

Hello. It sunk into my head to make a specific bot or service (which is more correct?) For VK, I will not fully state the essence, so as not to disclose "commercial secrets".
Task: to monitor the list or specifically the target community in VK, then send statistics about what is happening in it, in text and graphic form. Roughly speaking, this is the same statistics that the communities already have, only on the service side and of course not on such a scale, but according to a certain parameter, which is very easy to calculate. I studied "programming" (pascal/delphi) only at school (already 10 years ago), so I have almost 0 skills. Now I'm slowly learning php, I have time to develop.
What do you need to study to implement the idea? Thanks in advance.

Answer 1

The task is trivial, so there are many options. But, as I understand it, you are faced with web development for the first time, therefore:
1) To display the page on the client side, you need to use html + css. For plotting - js + svg / canvas
2) On the server side for collecting information, storing and processing, isp. php + mysql. Or a more hard but flexible option: node js + mongo