New to Anime? Read This

I prefer downloading because the quality is much better than on the streaming websites, especially the illegal ones, and because of the annoying ads as well. Adblocker is no longer a safe option nowadays since most of those websites will ask you to turn it off, or else you won't be able to watch anything.
The sites that i use for finding batches / episodes are: HorribleSubs and nyaa.si. I've never seen any annoying ads on these websites either. You will also need aBitTorrent client like qBittorrent / uTorrent