Help with some Chapter 1 Side quests

Hi, I just started playing BGEE this week and used google and FAQs to help, I read somewhere that some new side quests were added into the game, however I have some quests which I have no idea how to go about it, any help with them would be appreciated.

The side quests are:

1. Rising Tensions with Amn

2. The Mage's School

3. Troubles in the Region

4. Dorn Il~Khan

Thanks in advance for any assistance.