Answer: Go for subjects you're good at, stick with it, answer those questions fluently as if it's your own work this helps with points and brainliest marks. If there is a subject your not to good at are not very confident about an answer,just double check to see if you're right. When you're in a comment conversation, try not to be offensive and overall just be chill. People will be people and sometimes there's nothing you can do about it. Also, if you know the answer and both answer spots have been taken, i suggest you comment it, just for a 3rd reference to help the person be more confident in which one is correct. Just have fun with it and be yourself, Welcome to Brainly :)
What I recommend is to answer questions and complete the challenges. You can set the subjects that you want to answer the questions for. So for example, I have my subjects for questions set as math and English because those are the subjects that I am good in. Then, I usually just scroll through the feed of questions (which contain math and English for me) and read through them, you don't have to click on it but just skim through to see if it's a question you could possibly answer. Then, if you might be able to answer it click on it and see what you can do. I also recommend doing the challenges. Sometimes it can have you answer 5 questions in 24 hours to earn 50 points. Once I got to answer 25 questions in 48 hours to earn 250 points. It usually just depends on what you are willing to do. The challenges usually come up on the right side of the screen on your homepage. (Also to easily access the home page, you can click the black and white brainly logo at the top left of the screen)
Hope this information helped you! Feel free to ask any additional questions about this in the comments to this answer down below!
