I am having Problem developing My theme

the linked example site is using the theme ‘jarida’ by themeforest – it might be easier to buy that theme instead of trying to recreate the layout.

as it is now, your question is too broad to be answered;
possibly start by reviewing https://codex.wordpress.org/The_Loop

also useful might be if you can post a link to your site to illustrate what you have so far, and describe in much more details where exactly you are stuck.

please read the provided documentation https://codex.wordpress.org/The_Loop plus http://codex.wordpress.org/Class_Reference/WP_Query plus possibly http://codex.wordpress.org/Class_Reference/WP_Query#Category_Parameters

what is the code of your front page template so far?