Create an account, go through KYC verification,make a deposit and subscribe to any suitable tier of plan.
No, with an active plan withdrawal from the ongoing/current plan will not be possible, at such moment a user can only withdraw from their available balance till plan exhaustion. 
Referral bonus is the earning on an investors dashboard from a directly or indirectly referred individual signed and subscribed to a plan.
With a plan completed every user gets to have the opportunity to climb through the tier's of plans on multiple portfolios simultaneously earning weekly ROI.

Yes, Edgelevel is a Crypto investment company using Blockchains for swift processing of transactions.