First of all, will... I mean real willingness to learn. That's the main key in this long but fun journey.
Now, you can start watching series and movies with subtitles and that will help you a lot to get used to words and its meaning and with pronunciation as well (just don't start with british stuff 😆). You can also read things online and use the translator tool as a little help (although that is not entirely reliable). Apps can be very useful too, there's plenty of those around, do your research.
Never be afraid of making mistakes, that's part of the process. Start writing in english as muchas you can. That's what I'm doing and there I go... trying to learn and improve gradually. Sure I make mistakes, probably even in this post but you know what? I think people will understand my idea and that's what I want... express myself and break the language barrier.
I really hope you can achieve your goal. English is a must and can get you to really amazing opportunities. Whether you like it or not English is world's language.