diff --git a/Lec10/buf/main.go b/Lec10/buf/main.go
new file mode 100644
index 0000000..d1531be
--- /dev/null
+++ b/Lec10/buf/main.go
@@ -0,0 +1,17 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+func main() {
+	var name string
+	input := bufio.NewScanner(os.Stdin)
+	if input.Scan() { //Capture input and save into buffer. Captures until \n
+		name = input.Text()
+	}
+
+	fmt.Println(name)
+}
diff --git a/Lec10/go.mod b/Lec10/go.mod
new file mode 100644
index 0000000..a692304
--- /dev/null
+++ b/Lec10/go.mod
@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4
diff --git a/Lec10/main.go b/Lec10/main.go
new file mode 100644
index 0000000..b4ef496
--- /dev/null
+++ b/Lec10/main.go
@@ -0,0 +1,37 @@
+package main
+
+import "fmt"
+
+func main() {
+	name := "Привет"
+	fmt.Printf("String is %s\n",name)
+
+	fmt.Printf("Runes: ")
+	for i:=0; i < len(name); i++ {
+		fmt.Printf("%x ", name[i])
+	}
+	fmt.Println()
+
+	fmt.Printf("Bytes: ")
+	for i:=0; i < len(name); i++ {
+		fmt.Printf("%c ", name[i])
+	}
+
+	fmt.Println("RUnes")
+
+	runeSlice := []rune(name)
+	fmt.Printf("Runes: ")
+	for i:=0; i < len(runeSlice); i++ {
+		fmt.Printf("%c ", runeSlice[i])
+	}
+	fmt.Println("Bytes to runes")
+	for id,runeVal := range name {
+		fmt.Printf("%c start at position %d\n", runeVal, id)
+	}
+
+	word1 := "Vasya"
+	word2 := "Petya"
+	if word1 != word2 {
+		fmt.Println("Not equal")
+	}
+}
diff --git a/Lec11/go.mod b/Lec11/go.mod
new file mode 100644
index 0000000..a692304
--- /dev/null
+++ b/Lec11/go.mod
@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4
diff --git a/Lec11/main.go b/Lec11/main.go
new file mode 100644
index 0000000..40d4be3
--- /dev/null
+++ b/Lec11/main.go
@@ -0,0 +1,22 @@
+package main
+
+import "fmt"
+
+func main() {
+	mapper := make(map[string]int)
+	fmt.Println("Empty map: ",mapper)
+
+	mapper["Alice"] = 24
+	mapper["Bob"] = 14
+
+	fmt.Println("After updating mapper: ", mapper)
+
+	Mapper := map[string]int{
+		"Alice": 1000,
+		"Bob": 50,
+	}
+	Mapper["Jo"] = 3000
+
+	fmt.Println("Initialized map: ",Mapper)
+
+}
diff --git a/Lec12/go.mod b/Lec12/go.mod
new file mode 100644
index 0000000..a692304
--- /dev/null
+++ b/Lec12/go.mod
@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4
diff --git a/Lec12/main.go b/Lec12/main.go
new file mode 100644
index 0000000..c589002
--- /dev/null
+++ b/Lec12/main.go
@@ -0,0 +1,19 @@
+package main
+
+import "fmt"
+
+func main() {
+	 words("lol","kek","azaza")
+	 wordSlice := []string{"буль","пук","ам"}
+	 words(wordSlice...)
+}
+
+// Именованный возврат значений
+func words(wordd...string) {
+	var result string
+	for _, val := range wordd {
+		result += val
+		result += " "
+	}
+	fmt.Println(result)
+}
\ No newline at end of file
diff --git a/Lec9/go.mod b/Lec9/go.mod
new file mode 100644
index 0000000..a692304
--- /dev/null
+++ b/Lec9/go.mod
@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4
diff --git a/Lec9/main.go b/Lec9/main.go
new file mode 100644
index 0000000..1ad6ff8
--- /dev/null
+++ b/Lec9/main.go
@@ -0,0 +1,20 @@
+package main
+
+import "fmt"
+
+func main() {
+	myWords := make([]string,0,20)
+	myWords = append(myWords, "one","two","three")
+	fmt.Println(myWords)
+	anotherWords := []string{"1","2","3"}
+	myWords = append(myWords, anotherWords...)
+	fmt.Println(myWords)
+
+	mSlice := [][]int{
+		{1,2,3},
+		{2,3},
+		{1,1,1},
+		{2,2},
+	}
+	fmt.Println(mSlice)
+}
diff --git a/count_arr/main.go b/count_arr/main.go
new file mode 100644
index 0000000..25d82d4
--- /dev/null
+++ b/count_arr/main.go
@@ -0,0 +1,26 @@
+package main
+
+import "fmt"
+
+func main() {
+
+initArr := []int{1,2,3,4,1,1,4,2,5}
+fmt.Println(initArr)
+
+CountStrg := make(map[int]int)
+
+for _,val := range initArr {
+	// fmt.Printf("Key is %d and val is %d\n",key, val)
+	if _,ok := CountStrg[val]; !ok {
+		CountStrg[val] = 1
+		continue
+	}
+	CountStrg[val]++
+}
+fmt.Println(CountStrg)
+fmt.Print("==========================\n")
+fmt.Println("Len of slice is: ",len(initArr)," and capacity is ",cap(initArr))
+initArr = append(initArr, 10)
+fmt.Print("==========================\n")
+fmt.Println("New len of slice is: ",len(initArr)," and new capacity is ",cap(initArr))
+}
\ No newline at end of file
diff --git a/for_perf/endless b/for_perf/endless
new file mode 100755
index 0000000..13e92af
Binary files /dev/null and b/for_perf/endless differ
diff --git a/for_perf/go.mod b/for_perf/go.mod
new file mode 100644
index 0000000..a692304
--- /dev/null
+++ b/for_perf/go.mod
@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4
diff --git a/for_perf/main.go b/for_perf/main.go
new file mode 100644
index 0000000..103ecdd
--- /dev/null
+++ b/for_perf/main.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func busyWork() {
+    for {
+        for i := 0; i < 1_000_000; i++ {
+            _ = i * i
+        }
+        fmt.Println("Working...")
+        time.Sleep(100 * time.Millisecond)
+    }
+}
+
+func main() {
+    busyWork()
+}