In Bridge, there are two ways to open a raw file. One is Cmd O (for "open") and the other is Cmd R (for "raw"). Can you try both, and make sure they both work? I'm suspicious that Cmd O might not work.
Textures are very easy to add. You'll be able to find heaps of them (both free and paid) by simply googling.
Then apply them to your photos using blend modes (and maybe masks) as I discussed in the Layers & Masks Class, of which I know you are already a member.
Oh, web???? Great! Just make it maybe 2000 pixels on the longest edge, then save as a jpeg. In the window there you choose the Quality level of the jpeg save, you'll see it gives you an estimate of the file size.
Ok. You might need to do this: http://www.damiensymonds.net/2013/10/how-to-properly-re-install-spyder.html
Then follow my directions here: http://www.damiensymonds.net/cal_S4P_pc.html