diff --git a/day1/comments.js b/day1/comments.js
new file mode 100644
index 0000000..8db53af
--- /dev/null
+++ b/day1/comments.js
@@ -0,0 +1,10 @@
+//Task 1
+//comments can make code readable
+
+//Task 2
+//comments can make code readable, easy to reuse and informative
+
+//Task3
+/*
+  Welcome to 30DaysOfJavaScript
+*/
diff --git a/day1/datatypes.js b/day1/datatypes.js
new file mode 100644
index 0000000..699c994
--- /dev/null
+++ b/day1/datatypes.js
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+//Task 5
+let string = 'this is a string'
+let boolean = true
+let undefined
+let null0 = null
+
+console.log(typeof string)
+console.log(typeof boolean)
+console.log(typeof undefined)
+console.log(typeof null0)
diff --git a/day1/values.js b/day1/values.js
new file mode 100644
index 0000000..2b2468f
--- /dev/null
+++ b/day1/values.js
@@ -0,0 +1,31 @@
+//Task 6
+let hello
+let a
+let hi
+let simple
+
+//Task 7
+let a1 = 'st'
+let js = 1
+let l = false
+let pr = 23.4
+
+//Task 8
+let firstName = 'Arina'
+let lastName = 'Ivleva'
+let country = 'Russia'
+let age = 16
+
+//Task 9
+//VS Code исправляет написание в одну строчку, так что решение записано в комментарии
+
+/*
+  let firstName2 = 'Arina'; let lastName2 = 'Ivleva'; let country2 = 'Russia'; let age2 = 16
+*/
+
+//Task 10
+let myAge = 'I am 25 years old'
+let yourAge = 'You are 30 years old.'
+
+console.log(myAge)
+console.log(yourAge)
diff --git a/day1/variables.js b/day1/variables.js
new file mode 100644
index 0000000..8ddcc94
--- /dev/null
+++ b/day1/variables.js
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+//Task 4
+let string = 'this is a string'
+let boolean = true
+let undefined
+let null0 = null