Have you ever tried Basic Econometrics by Gujarati? If not, kindly visit: https://www.academia.edu/15273562/Basic_Econometrics_5th_Edition_by_Damodar_N._Gujarati_and_Dawn_C._Porter_
Jeffrey Wooldridge's Introductory Econometrics, Gujarati's Basic Econometrics and Principles of Econometrics by Carter Hill et al. The Carter Hill et al.'s book is even written for such software as R, Stata and SAS.
After that, I think using Econometric Methods, which was written by Johnston can help you to expand your knowledge about econometric models that plays a vital role in your academic career.
Finally, You can use Econometric Analysis, which was written by Greene, One of the most beneficial books in econometrics that You can widen your horizons in econometrics with this, and you can find it in this below link