Shedding is very MINIMAL. Any hair that has been manufacture to be stitched on a weft OR knotted on lace is entitled to experience minimum shedding which is absolutely normal. Curly textures experience slightly more shedding than straight or wavy textures. 

There is initially no tangling. The hair can begin to tangle if you have product buildup.  Make sure to shampoo using a sulfate-free shampoo to get rid of product build up and deep condition to restore the moisture.