Diegui's War40K Storyteller/Dungeon Master

Lets start the adventure/war, so please give me options and help me create and decide my characters classes, legion, faction, god, abilities, equipment, inventory, alignment, race, gender, setting, time, location

I have never played Warhammer 40K can you help me please oh great Omnissiah.

Help me get started Quick.

I have my own character and adventure/story already, please help me continue.