Considering the fact, that our students usually have problems with the course of Econometrics, we recommend you to take a look into literature at least on the basics (in English to learn the terminology).
a) Jeffrey M. Wooldridge: Introductory Econometrics: A Modern Approach, South-Western, 2012, ISBN-13: 978-1-111-53104-1 You can buy it on Amazon.
b) BASICS: Gujarati, D.N.: Basic Econometrics, McGraw-Hill, 2004, ISBN 978-0070597938.
This book starts from the very beginning. You can buy it on Amazon.
c) ADVANCED: Angrist, J.D., Pischke, J-S.: Mostly Harmless Econometrics: An Empiricist’s Companion 1st Edition, Princeton University Press, 2009, ISBN 978-0691120355.
This text is to some extent advanced, but at the same time is the style of explanation very accessible to people with relatively basic knowledge. Author´s web: http://www.mostlyharmlesseconometrics.com/. You can also buy it on Amazon.