Small changes for readability

I got a little confused in one place (line 191) because the meaning wasn't clear. I also changed a couple of other places to make it read more naturally.

Author: a-ogilvie

1-js/05-data-types/06-iterable/article.md

@@ -188,7 +188,7 @@ for (let item of arrayLike) {}
 */!*
 ```
 
-What they share in common -- both iterables and array-likes are usually *not arrays*, they don't have `push`, `pop` etc. That's rather inconvenient if we have such an object and want to work with it as with an array.
+What do they have in common? Both iterables and array-likes are usually *not arrays*, they don't have `push`, `pop` etc. That's rather inconvenient if we have such an object and want to work with it as with an array.
 
 ## Array.from
 
@@ -295,8 +295,8 @@ Objects that can be used in `for..of` are called *iterable*.
 - String iterator knows about surrogate pairs.
 
 
-Objects that have indexed properties and `length` are called *array-like*. Such objects may also have other properties and methods, but lack built-in methods of arrays.
+Objects that have indexed properties and `length` are called *array-like*. Such objects may also have other properties and methods, but lack the built-in methods of arrays.
 
 If we look inside the specification -- we'll see that most built-in methods assume that they work with iterables or array-likes instead of "real" arrays, because that's more abstract.
 
-`Array.from(obj[, mapFn, thisArg])` makes a real `Array` of an iterable or array-like `obj`, and then we can use array methods on it. The optional arguments `mapFn` and `thisArg` allow to apply a function to each item.
+`Array.from(obj[, mapFn, thisArg])` makes a real `Array` of an iterable or array-like `obj`, and we can then use array methods on it. The optional arguments `mapFn` and `thisArg` allow us to apply a function to each item.