After several attempts, i found the way of making PCB's, wich is the cheapest, easiest and fastest for me.
I hope this instructable will help you to decide what's the best method for you, because there are so many to choose.
Step 1: Materials
-A copper board.
-The design printed with a LASER printer on glossy paper.
-The etching solution (Hydrochloric acid + Hydrogen peroxide).
-a plastic flat container.
-Steel wool or fine sandpaper.
-A Dremel for the trough-hole components.
-A soldering iron.
Step 2: The board
Then scratch the surface with some sandpaper to make better the toner transfer.
Step 3: Toner transferring
Then fold the paper wrapping the piece and hold it together with tape.
Iron the toner side for about a minute.
Step 4: Removing the paper
Step 5: Etching
First, fill the container with the etching solution (in my case Hydrochloric acid + Hydrogen peroxide).
Place the circuit floating in the solution with the copper facing down.
Check the circuit each minute to see how it goes.
When the last copper trace disappears, dry the circuit to stop the acid action.
Step 6: Cleaning the board
Clean the polish and the remain toner with a paper moisten in acetone.