please watch these
https://www.youtube.com/watch?v=D2NK_gu7B3E
https://www.youtube.com/watch?v=NHC6AVikKOQ
https://www.youtube.com/watch?v=YYyF55Afcug
https://www.youtube.com/watch?v=bfEHPE5BWH0&spfreload=10
https://www.youtube.com/watch?v=NHC6AVikKOQ