Hi Liutauras Vilda,
You made my day thanks for the motivation and I will never give up!
By the way "The Shawshank Redemption" and "Stand and Deliver" one of my best motivational movies.
I see a lot of of recommended books and the one that I have read is OCA: Oracle Certified Associate Java SE 8 Programmer I Study Guide: Exam 1Z0-808 - Jeanne Boyarsky and Scott Selikoff.
Which others are excellent books?
I heard of the below are good book, do you think I should purchase them or should I just stick with the current book that I have and master all the concepts?
OCA Java SE 8 Programmer I Certification Guide Book by Mala Gupta
A Programmer's Guide to Java SE 8 Oracle Certified Associate (OCA) Book by Khalid Azim Mughal and Rolf W. Rasmussen