This guide is intended for future programmers who need to know the basics of testing software products, how to work in a team with testers, the need and basics of software verification and modeling. The purpose of the manual is to revise the attitude of developers to the quality of modern software. The first part of the manual covers testing methods, software specifications, documentation, unit testing in IntelliJ IDEA, MS Visual Studio environments, software development methods based on testing (TDD) and behavior (BDD) in IDEA environment in Java, functional automated testing in IBM Rational Tester environment, testing Web applications using Selenium.