What are some tips for improving writing skills, specifically in sentence structure and grammar? How much time does it typically take for a beginner writer to progress to an intermediate level?

ALL I can tell you is that I have read over twenty books about writing and I find it so difficult, being dyslexic doen’t help. Secondly I was an outlaw and was throw out of school every year from 71- 1977 when I told the printable give me my DIAPLOMA or i’ll be back! form 73- 1984 I was evading the police after my associates went to jail in 1984. THE killer and another friend, it didn’t sit well with the REVERE police because I was the most notorious one out there dealing; for added enjoyment, they arrested me nine times while walking down the street, violating my civil rights between 84- and 1987 when I caught the killer. IT took me catching the murderer to get them off my back, them I own a landscaping business a lot of the cops hired me to do work for them. END of the story is I didn’t know one thing about writing when I started in 2016 after studying for twelve years in forensic’s behavioral sciene