Seeed Studios has a really good PCB Design Manual. It's good reading and will answer your questions.
If you want people to look at your schematics and boards, it's best to attach them as PDFs or images. Only people with the software you used can see your schematic and board. Make it easy for the people who might give you help.
I only have heard of the program "PADS" but never used it. I've used Protel years ago and now I am solely using Proteus ARES for all my PCB design works.