Returning player need some help!

hey guys, id appreciate some help here… !

so i played LE ages ago when it was very new in early beta long before trade or all the class reworks actually … i stopped playing right before legendary items came out… i remember reading about legendary coming but left before they came out!

now i came back with a friend and im looking for a good way to catch up with changes … with the choice to the trade/no trade thingy with classes items and overall gameplay and endgame … . if you know any place/video / post that is good for this info and recap it … or some good guide for the game please if you dont mind direct me or link to me even in PM ill be grateful !

additionally if you have any tips/advices or info that can help maybe if there site with lots of guides… ill appreciate it ! thank you all!