index.tex

\documentclass{book}
\usepackage[utf8]{inputenc}
\usepackage[russian]{babel}
\usepackage{color}
\usepackage{hyperref}
\usepackage{amsfonts}
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{indentfirst}
\usepackage{amsmath}
\usepackage{bbm}
\usepackage{enumitem}
\usepackage{gensymb}
\usepackage{subcaption}
\hypersetup{
	colorlinks=true,
	linkcolor=blue,
   	linktoc=all
}

\begin{document}
\tableofcontents

\pagestyle{plain}

\input{lessons/lesson1.tex}
\input{lessons/lesson2.tex}
\input{lessons/lesson3.tex}
\input{lessons/lesson4.tex}
\input{lessons/lesson5.tex}
\input{lessons/lesson6.tex}
\input{tests/test_v1.tex}
\input{tests/test_v2.tex}
\input{tests/test_v3.tex}
\input{lessons/lesson7.tex}
\input{lessons/lesson8.tex}
\input{lessons/lesson9.tex}
\input{lessons/lesson10.tex}
\input{lessons/lesson11.tex}
\input{lessons/lesson12.tex}
\input{lessons/lesson13.tex}
\input{lessons/lesson14.tex}
\input{lessons/lesson15.tex}
\input{lessons/lesson16.tex}
\input{lessons/lesson17.tex}
\input{lessons/lesson18.tex}

\end{document}