(For the readers in Iran) This is the path I've taken in familiarizing myself with literary theory and criticism, and have found it to be satisfactory, although some may find it too long or time-consuming:
1.A Short History of Literary Criticism By Vernon Hall, short, reader-friendly, and covers up to early 20th Century. May be a good choice for a complete beginner.
2. Literary Criticism: An Introduction to Theory and Practice
By Charles E Bressler. More focus on later theories, with helpful examples of their application.
3. Literary Criticism from Plato to the Present: An Introduction By M.A.R. Habib. This book puts more emphasis on both the earlier eras and contemporary theory, and is somewhat less reader-friendly than Bressler.
4. Selden. In the beginning of this journey, I found Selden's book absolutely unreadable. But now I find it very helpful, and completely suited to someone who'd like to fill the gaps in their general knowledge of literary theory and criticism. If you begin this journey as an undergraduate student, you'd be much more comfortable with difficult texts as a graduate student.
Of course one can go anywhere from here, and I appreciate the fact that Selden gives precise recommendations on which essays or books to read on any subject that one feels more interested in.