Each language has been created in different context, trying to solve problem by using different approach.

Sure, they all need basic IF-ELSE, WHILE... But it is really helpful not to focus on too detail of technical side at the beginning. At high level, understand why author needs to create this language? Why the author did not select existing solutions at that time? This kind of "culture" background will help you understand language much deeper and avoid a lot of confusions.

I hope this will help.