Some of the biggest misconceptions that many non-Muslims have about Islam have to do with the word "Allah". For various reasons, many people have come to believe that Muslims worship a different God than Christians and Jews. This is totally false, since "Allah" is simply the Arabic word for "God" - and there is only One God.
This link list has many sites that are dedicated to evangelism among Muslims, some are very contextual in their approach other less so but all of them have many resources for understanding Muslims.
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