I use Tab completion alot. I do mostly mathematical programming, I can keep track of horrible extremely short namespaces easily and then use find and replace feature to make everything nice. Even though I have no real concept for it, I just do it to make the code more similar to my colleagues.

Every training I had to overcome my dyslexia was absolutely useless. Spellcheck is very important. Fonts and colors don't matter at all. Just seeing my own work after I forgot about it, actually makes me see my mistakes. This can take years, my memory is insane for my own work.

You can't see mistakes, since you basically have an internal autocompletion that doesn't allow you to see mistakes or missing words. Checking the code of my coworkers is surprisingly different, I can find their mistakes quite easily.

It is much more important to have goal and motivation. Don't worry about those little details, like floating letters and missing words.