Can I put ceramic tiles right on my poured basement walls ? I want to put a shower in and tile the walls floor and cieling. Should I put a false wall and tile over it or can I put ceramic right on the concrete?
You can definitely put tiles right on the concrete wall. However, if you're building a shower, it's critically important that you have a waterproof membrane separating the finish materials (tile) from the structure (concrete walls and cement backboard on any framed walls you build). I suggest painting the walls with Redgard, a sort of paintable rubber. You paint the floor, too. Then you tile over that.
Yes, concrete is the perfect base for adhering tile to. As long as it is sound and sturdy. Also check for plumb (not as critical). As iLikeDirt answered , steps should be taken to prevent moisture from migrating into the wood framing (Via the concrete walls). Sealing them, as he suggested works well. The concrete wall should have a vapor barrier already installed under it, but a second is good insurance.