Hi. Welcome to the forums.
1. A simple google search should give you alot of information on this. You also say you are currently studying digital and analog, so if you are patient, your teacher will teach you.
2. Sure, you should be able to make some simple circuits. Hve you learned about transistors and inductors yet? Those are also important. After you know about those, and some basic math (ohms law) you have the basics pretty well covered.
3. Pay attention in your classes. If you have a desire to learn, there is a huge wealth of information avalible for free on the internet.
4. Sorry, can't offer any input on this. I do not have either degree.
5. Are you looking for a simulator or just a drawing program? There are alot of both out there. I personally hate drawing circuits on the computer, and don't really use simulators, so I can't offer much input. Do a google search and you will find plenty of programs you can try.