Recommend ko lang sayo, be familiar with primitive data types, function, classes, es 2016. Be familiar rin po on how the computer reads the js code such as when it reads the operand. Try to wâ†ch frêê YøùTùbé videos that can help you understand js more, gaya nalang po ng javascript the weird parts ni tony alicea or mga tutorial ni traversy media. Or kung may pera ka try mo uedemy. Try to read documentations po sa mozilla mdn web docs or sa stackoverflow. Understand how a library/framework works. And lastly po, try to practice coding ng hindi gumagaya sa code ng iba or sa tutorial. Gawa ka simple website that involves intensive js tweaking or small js library. Pag na try nyu yan or napag aralan nyu yung namention ko above. Dive in kana sa js library/framework. Not a pro js programmer, pero experience ko lang yan as a solo learner ng web dev.