Hello, Greetings, Don't Do Drugs, etc.
#1 is there a way to mod your axbox without any expansive stuff? (or for free that would be great)The rest of your questions are geared toward 360 so I'm assuming this is as well. If you have Xbox questions (not 360) check out the rest of the forums, there's tons of stuff. You can mod your Xbox360 for free, the only mod that you can currently perform is a Firmware hack that allows you to play backed up games. (Search the forum for more info)
#2 is there a way to place mods on an xbox360 memory card that has your profile on it? Sadly, no there is no way to do this.
#3 what is the diference between soft moding and there other kinds of modding(cant rember exact name)Softmodding is when you leave the consoles hardware intact and simply modify the software to make it do what you want. Hardware mods are when you actually add or remove hardware to achieve the desired results. Such as a Modchip or something similar.
#4whats the easiest/cheapist way to upload/get mods from your computer to your xbox360 and is there a way to use the media sharing thing to upload it?There really isn't a way to do this. Xbox360 cannot yet be modded and used like a regular Xbox. Sorry