Is it possible for anyone to nominate a place, documentation or tutorial to learn developing Shopify themes? I have learned liquid Shopify template language but I can not understand how should I use it in my template or my client's template that I made with (html5 / bootstrap / css3 / js / OOp js / jquery) Any answer will certainly be useful thanks.
for shopify theme development ,you can learn here https://www.shopify.com/partners/blog/topics/shopify-theme-development