I'm a new Linux/Ubuntu user came from Windows environment trying to figure my way into Linux and planning to make a full transition when i feel ready, and have some basic questions to make things clear to me.
1- Im using Ubuntu 13.04 with Kernel 3.8 pre-installed, what changes would happen if i installed newer kernel? will i lose my installed apps? drivers? theme? configurations? anything i should be aware of in this matter?
2- I install most of my apps directly from repositories/ppa's , if i installed apps downloaded from sites - .deb files - will i be able to get lastest updates to these apps? or would i update them manually?
3- Is there any IDM like or any download manager that is integrated with Browsers, to click and download with some nice features - multithreading, schedule, resume?
As i mentioned above i just came from Windows, any tips to make things easier and clear would be appreciated.
Thank you :)