i just got my datacable and i am a hectic newbie,so i really need help to get started.

what i need:
1.)An app that i can Flash all nokias 100% working
2.)An app that can change imei numbers for nokia
3.)A webiste or anything where i can get flash files,for all nokias, and FW descriptions for all nokias
And i also would really like Step by Step guides,if they could come with it

help would be greatly appreciated