What do you mean by “UNPACK” is the first question then
So you are ready for your first WP theme
^ Tamil Unicode won’t display You can type in Tanglish
You can try some great courses here: https://tutsplus.com/?s=WordPress&post_type=course also some ebooks https://tutsplus.com/?s=WordPress&post_type=ebook also this site http://code.tutsplus.com/categories/wordpress and this one if you have any doubts http://codex.wordpress.org/
If you are not familiar with PHP you can use this course https://tutsplus.com/course/php-fundamentals/ and if you want OOP in your theme learn the basics here https://tutsplus.com/course/object-oriented-design-in-php/
I heard this is a nice framework http://notes.envato.com/industry-news/introducing-the-redux-framework/ also you have see some framework suggestions here in forum, try search.
1. Try removing the RAM and scratch it with rubber ( school eraser ) and put it back, and check.
2. Try reinstalling the OS.