Going through my old Lego

So I’m not like a Lego fanatic but every Christmas I get Lego for Christmas which I appreciate a lot recently it’s been f1 cars but every year it reminds me of lego and how much I used to enjoy playing with them and building them, so after finishing my Ferrari f1 this year i decided I want to go through my old Lego cos I knew it was valuable and I had a lot and for old times sake. Unfortunately when I grew up a bit my mum took apart the majority of my sets encouraging me to put them back...