Chatbot in Python + SQLite. Where to look for information?

Question

PHP

Greetings to all who know and not so much!
The task is to create a chat bot for VK (with the possibility of expanding to other platforms, such as FB_Messenger, Telegram, etc.)
The functionality will allow using the specified parameters to select the most suitable service.
For example and understanding: There is a database with information about companies, their services and reviews, let's assume that this is a list of regional Internet providers. The user, in the process of communicating with the bot, can choose the best option based on reviews, prices and services provided.
You can also add your rating and feedback about this company.
At the moment I have very little knowledge of programming and am in the process of learning.
In connection with this fact, a number of questions arose:

1. Is choosing Python + SQLite the best choice? Maybe write in PHP?
   
2. Can you suggest a good, understandable and Russian-language documentation for Python\SQLite\PHP\VK_API ?
   
3. What should be paid special attention to?
   
4. Can you recommend video tutorials, step by step guides on my topic?
   

I will be glad to any information, I will also try to answer clarifying questions. In the meantime, I continue to smoke Google.

Answer 1

Yearly guide to bots.
1) For educational/small projects, sqlite is fine.
2) Google the documentation yourself, the Internet is full of sites. Moreover, vk api, which is originally in Russian (learn English, without it you will not be able to study and work normally).
3) PEP8
4) Here , here and here .