For example in English words are often uninflected. Languages like Hungarian/Turkish have a lot of prefixes/suffixes. You'd think that means they're a lot more complicated, but in reality their prefixes/suffixes are very predictable whereas English is all over the place. Is it noninflected, disinflected, deinflected, ininflected, flected?
Hands down, teaching phonics is far and away the fastest route to being able to decode words. Similarly, reading to your kids is the fastest way to get them interested in reading. Using the motivation to learn to get going on the phonics is more than adequate to teach reading.
And don't expect things outside of spelling/reading to be any more "logical." Try explaining the rules of any sport in a way that isn't dominated by the exceptions.
But for the real difficulty learning English, consider all the forms of "be" and the weird rules for which one to use. (Spanish is only dubiously better in this respect; there are still a lot of verb forms you just have to memorize, but at least you can follow actual rules on which form to use.)
This is in contrast to logographic symbol sets, that do not correspond to sound encodings. Think emoji.
Advanced grammar is a trap in all languages.
https://blog.rosettastone.com/what-is-the-hardest-language-t...
https://www.reddit.com/r/languagelearning/comments/87jy70/ra...