To what extent would knowledge of Arabic grammar be useful in learning Hebrew? Neither of my parents are native Arabic speakers but I spent my entire life in the Middle East, so I speak Arabic with moderate fluency. I'm aware that Hebrew and Arabic have some lexical similarities given their Proto-Semitic origins, but is the grammatical structure similar at all? Basically, what advantage do I have as an Arabic speaker?
Also, what's the most difficult part of learning Hebrew? And what aspects of the language make it seem quite easy? Am I right in thinking that Hebrew spelling is quite straightforward, given the absence of vowels and the "joining" of words like in Arabic?