I finally learned all the tricks on the yoyoexpert tutorials and I’m wondering where can i look for more.
Wow. How many of these threads have we had in these 2 weeks? 100? Nah sarcasm, but seriously.
Youtube, just search up yoyo tutorials, you ought to find more and more as your learn.
Rethinkyoyo.
And make up your own.
thanks 
do you have any tips on grinds?
Which grind? You just really practice, as grinding you just gain experience and find your own way.
Youtube, Rethinkyoyo. Heres an easy but fun trick to learn, Triangulation. Go learn it 
here are some youtube channels that i find helpful
rethinkyoyo
yoyoskills
ibanezcollector
onedropdesign
highspeedyoyo
yotard
jayyotutorials
yoyoexpertutorials.
xelala
Hope this helps