What a interseting topic!
1. My advices on stydying English is learn how to use English naturally like our mother languages. I will divide my advices on 3 points: listening, reading and speaking.
Firstly listening, we should practice listen depeand on our level A1, A2,... on videos on youtube ( i recommend Engvid, ielts listening exam, you can chose only part 1 and 2, which is failrly easy, to practice...) because that way seems fun for me, have fun then it grows desire to study it. Moreover, when native people speaking, they use easier, more familiar and more common words than they use when writing, they also use more simple sentences.
Secondly reading, build vocabulary is neccessary, and everyone knows that, but now I want to talk about another aspect, which is comprehension. When I did an actual test, i was very shocked because a lot of new words and i tried to find out every single words meaning. Then I wonder: why i can't understand articles but i can listen? My solution to this problem is I need to read smarter not harder. My advice is summarize paragraph, find keys words, connect information from passages then explain it in your way.
Thirdly speaking, i really like to slogan "raise your voice and make the changes" of a debate club in my school, I want everything I speak, I share is worth sharing. So I advice you chose the topic that stear your curiostity and desire to talk, to share. In that way, you will have pasion to do, to find, to learn more.
2. The hardest problem i confronted in my study is self-study. But, it's a leap in my learning journey.
3. Until now, being a student is a precious momments to me because i learn very from my friens, my techer. That is be kind, be courage to admit my mistake, my flaws and believe everything will be oke. And also because i know what is love.
Thanks for reading <3.