Tips and Tricks for Unity 5

Hey guys its been a while since I've done some game development using unity could anyone give me any tips about how it works now . I've used it for a couple of months so far but not that much also any tips on how to acquire decent free assets would be wonderful .

Thanks in advance :)

just keep on looking in the asset store make sure to sort by price when searching to see free stuff first https://www.assetstore.unity3d.com/en/#!/home