I want to try watching boku no pico but I can't find the episodes.Can someone please tell ...

Try myreadingmanga - they have lots of yaoi anime

It said that I would have to download it.Can you suggest a website where I can watch it without having to download it or pay for it?

http://iayashi.webs.com/apps/videos/
You have to register.

I searched it up and this came up, you dont have to pay or download. https://twist.moe/a/bokunopico/1