Applied Energistics 2 stores items digitally: an ME network of cables, drives and storage cells, used through terminals.
Start with 
Certus Quartz Ore (underground, up to height 64). It drops 
certus quartz crystals, rarely charged ones.
Network energy is mp;5AEmp;r (1 EU from other mods = 2 AE).
Without other mods: a 
Vibration Chamber burning coal. With other mods: an 
Energy Acceptor on their cables.
Roadmap: meteorite → inscriber → fluix → network → cells → terminal → autocrafting.