You'll want to download:
Beam Saber V1.2 (the rules)
Beam Saber Reference Sheets V1.1 (printing or otherwise depend on how you plan to play)
Beam Saber Resources (if you plan to play online)
Faction & Region Sheets (for recording information about factions & regions)
Pilot Playbooks V1.2 (for if you want to print them out, if playing online then use the spreadsheet character keeper provided in that zip file)
Squad Playbooks (if you want to print them out, if playing online then use the spreadsheet character keeper provided in that zip file)
Hope that helps.