What's a good topic to talk to English people?

For unfamiliar people, opening remarks, weather. The weather in Britain is changeable. Sometimes we can talk about the weather change for a long day, and we can also talk about global climate change. But I'm never used to discussing the weather with people. If you meet them for the first time or in social situations, you can ask them what they do and what do you do? They usually talk about what they do or ask about their hobbies. At the same time, they can share their study, work and hobbies in time, and maybe find something from them. People who are slightly familiar with them ask them how are you? They really care about how they are and what they have met. When people ask you how you are, they really share their feelings. I didn't know this until I came to England. I have a friend, and she asked me how you were, so I started chatting with her and became friends.