RiqueXinw:
I have a friend who is new to BLs and wants to start watching them.
A determinant in terms of title choices is whether he might want to subscribe to Viki, Gaga or Iqiyi. Needless to say, one can watch lots of free BLs on Youtube (with adverts) or elsewhere (evil pirate sites!), but I would recommend Viki if possible, which is how I started with BLs. Although Viki has been recently been slow with new BLs, they still have a lot of high-quality titles in their catalogue, and it's technically the best platform. I also find the Viki reviews and average ratings convenient (and helpful as a complement to MDL reviews), although it should be recognised that Viki average ratings are uniformly inflated, i.e. "good" is above 9.0, "great" is above 9.5 or so. Viki is a reputable company owned by Rakuten of Japan, so I have no worries about credit card info and such.