fixes

1-js/02-first-steps/09-alert-prompt-confirm/article.md

@@ -1,6 +1,6 @@
 # Interaction: alert, prompt, confirm
 
-This part of the tutorial aims to cover JavaScript "as is", without environment-specific tweaks.
+In this part of the tutorial we cover JavaScript language "as is", without environment-specific tweaks.
 
 But we'll still be using the browser as our demo environment, so we should know at least a few of its user-interface functions. In this chapter, we'll get familiar with the browser functions `alert`, `prompt` and `confirm`.
 

1-js/02-first-steps/10-ifelse/article.md

@@ -2,7 +2,7 @@
 
 Sometimes, we need to perform different actions based on different conditions.
 
-To do that, we use the `if` statement and the conditional (ternary) operator which we will be referring to as the “question mark” operator `?` for simplicity.
+To do that, we can use the `if` statement and the conditional operator `?`, that's also called a "question mark" operator.
 
 ## The "if" statement
 
@@ -103,7 +103,7 @@ In the code above, JavaScript first checks `year < 2015`. If that is falsy, it g
 
 There can be more `else if` blocks. The final `else` is optional.
 
-## Ternary operator '?'
+## Conditional operator '?'
 
 Sometimes, we need to assign a variable depending on a condition.
 
@@ -124,9 +124,9 @@ if (age > 18) {
 alert(accessAllowed);
 ```
 
-The so-called "ternary" or "question mark" operator lets us do that in a shorter and simpler way.
+The so-called "conditional" or "question mark" operator lets us do that in a shorter and simpler way.
 
-The operator is represented by a question mark `?`.  The formal term "ternary" means that the operator has three operands. It is actually the one and only operator in JavaScript which has that many.
+The operator is represented by a question mark `?`. Sometimes it's called "ternary", because the operator has three operands. It is actually the one and only operator in JavaScript which has that many.
 
 The syntax is:
 ```js

1-js/02-first-steps/11-logical-operators/article.md

@@ -84,7 +84,7 @@ The OR `||` operator does the following:
 
 A value is returned in its original form, without the conversion.
 
-In other words, a chain of OR `"||"` returns the first truthy value or the last one if no such value is found.
+In other words, a chain of OR `"||"` returns the first truthy value or the last one if no truthy value is found.
 
 For instance:
 
@@ -101,7 +101,7 @@ This leads to some interesting usage compared to a "pure, classical, boolean-onl
 
 1. **Getting the first truthy value from a list of variables or expressions.**
 
-    Imagine we have several variables which can either contain data or be `null/undefined`. How can we find the first one with data?
+    Imagine we have a list of variables which can either contain data or be `null/undefined`. How can we find the first one with data?
 
     We can use OR `||`:
 
@@ -143,7 +143,7 @@ This leads to some interesting usage compared to a "pure, classical, boolean-onl
     alert(x); // 1
     ```
 
-    An assignment is a simple case. Other side effects can also be involved.
+    An assignment is a simple case. There may be side effects, that won't show up if the evaluation doesn't reach them.
 
     As we can see, such a use case is a "shorter way of doing `if`". The first operand is converted to boolean. If it's false, the second one is evaluated.