idk how to get beta 6 help me please

I'm pretty sure you need to buy it off of steam. Idk much but that's what I got from reading the other threads.

Yes to get the sixth beta you are going to have to purchase the game on steam. I have. I thought beta 6 was going to be free then I finally bought it on steam and all the new content was in the beta 6 videos and stuff. 

there's no beta 6 just 4 and 3 and 1 and 2 and 5