there is 10 steps
go to jita and buy orca
now look for large rigs under drone section
purchase large drone mining augmentor one tech1 two tech2
fit to your orca
buy and fit damage control t2 and reinforced bulkhead t2
buy and fit 2x large shield extender t2 and em,therm,kinetic tech2 hardeners for shields
buy and fit some remote shield ancillary boosters and get some cap booster charges that fits in them
8, buy 10 t2 hammerheads buy 10 t2 hobgoblins and 5x t2 mining drones , load them to drone bay
9, rest of high slots fit drone link augmentors.
your orca is ready insure it to platinum undock,find system with belts and go mine