Homebrew PCBs

I'm new to the forum, but have read through many of the posts.  I 
would like to thank everyone for the wealth of knowledge presented.  
I would like to know where one could get liquid solder mask and 
photo resist.  I've also been pondering silk screening resist onto 
boards before etching in CuCl.  What type of ink could I use for 
that?  Thanks

D.B.