Does it sound natural? The shop didn't have the shoes I wanted, but they've booked a pair specially for me. Can I use the word Book in this context?

Can I teach her? Hey, how you all doing? I've been learning English for approximately 7 years and I think I am now an advanced English speaker. I still have a lot of things to learn. I do a major of Civil Engineering in a university and I don't have a job and I am needing money. Last week a friend of mine asked me to teach her English, she saw me speaking with another guy and watching Friends without subtitles. She insisted that I could teach her English and that she wants to speak just like I do. I am not sure if I can do this and if it's the right thing to do. I am really needing money but I don't want to do one thing that I am not completely sure. I think I am needing some piece of advice. What do you think I should do? Thank you so much

Which one is correct? My 100-year-old grandfather can still stand. My 100-year-old grandfather still can stand.

SHE ASKED ME TO TEACH HER When I started learning English seven years ago it was amazing because I was very excited to able to speak a different language. I studied everything I could all at once. I met some people from the United States that were on my city and I felt really happy because I could communicate with them. And I was getting better every day. When achieved an advanced level of English I could understand almost everything in casual conversations and in intermediate texts. But then, I think I got a little bit lost on where to go. An advanced learner of any language is supposed to see more of cultural things than any other student, when you get to this level you mastered almost one hundred per cent of the most common words used in common situations. Last week I was watching Friends and a friend of mine was impressed that I could understand what they were saying. She was amazed when I talked in English with a teacher from university a month ago. And then she came to me asking(insisting, actually) that I could teach English to her. At first, I didn’t give too much of attention but she came again telling me that she wants very much to learn English. I told her that my English is not perfect and that I still have a lot of things to learn and that I might not be capable to teach you properly. I am really needing some money but I can’t do something I’m not one completely sure. She told me that I can speak English very good and that she wants herself to speak just like I do. What do you think I should do, my friends?

SHE ASKED ME TO TEACH HER When I started learning English seven years ago it was amazing because I was very excited to able to speak a different language. I studied everything I could all at once. I met some people from the United States that were on my city and I felt really happy because I could communicate with them. And I was getting better every day. When achieved an advanced level of English I could understand almost everything in casual conversations and in intermediate texts. But then, I think I got a little bit lost on where to go. An advanced learner of any language is supposed to see more of cultural things than any other student, when you get to this level you mastered almost one hundred per cent of the most common words used in common situations. Last week I was watching Friends and a friend of mine was impressed that I could understand what they were saying. She was amazed when I talked in English with a teacher from university a month ago. And then she came to me asking(insisting, actually) that I could teach English to her. At first, I didn’t give too much of attention but she came again telling me that she wants very much to learn English. I told her that my English is not perfect and that I still have a lot of things to learn and that I might not be capable to teach you properly. I am really needing some money but I can’t do something I’m not one completely sure. She told me that I can speak English very good and that she wants herself to speak just like I do. What do you think I should do, my friends?

HOW I TRIED TO LEARN ENGLISH THIS FULL TEXT IS ON THE PICTURE BECAUSE THERE'S A LIMIT OF CHARACTERS IN A NOTEBOOK ENTRY. SORRY :-) The first step I took on my English journey was to learn all the grammar I could. One day I got home and I decided to gather all the resources I got on my shelves, I searched for all the dictionaries and books I had. I set a plan of learning all the grammar tenses and conditionals of the English language. I was super exited and I was enjoining to be learning all of that stuff. However when I finished studying the last conditional I realized that I wasn’t fluent yet. And why was that? I didn’t had internet in my home therefore I had to go to an Internet cafe next to my home to look for texts and audios however I was frustrated because I didn’t get the fluency I wanted to when I started studying. But then I figured out that learning a language is not only about its grammar, and this represented a light on my dark brain at that time. A language can be sad as a code meant to be understood by two or more people, and this code brings all the cultural baggage of the person that is speaking. When someone is learning a new language he/she is not only learning words and tenses, he/she is also getting in contact with new outlooks and new realities. When my parents hired an internet plan things got a lot easier. There are a lot of information, millions of websites, millions of videos on YouTube. And this is a very good thing and I started to use them to improve my English. But the problem was that with so much of information at the same time I got lost on where I was, on where to start and where to go. I learned a lot of new things, I increased my vocabulary so much, I improved my listening skills and now I can understand almost everything on casual conversations, and despite not being perfect I think I am not that bad at grammar. The internet helped me to get better in a whole bunch of things but It was just a small part of things of I got saw. It looks like I have some kind of anxiety with a mess of matters that I can’t organize them. And eventually I still don’t seem to get my fluency.