1. You cannot just copy the contents of the CD to a USB stick and boot from that.
2. You can't just use your friends license. The install media fine, but you need to purchase you own OS license.
3. Suggesting or condoning pirated software is strictly against the Forum rules. All mentions of that have been deleted here.
4. Tight budget or no, if you want to use Windows, you must buy it.
If you want free, www.linuxmint.com