RAM is a consumable resource and needs to be purchased. EOS accounts created in Edge are initially allocated 8kb of ram, which should covers a very large number of transactions.
CPU is a staked resource that recharges over several days. If you run out of CPU, just wait 1-3 days until your CPU has replenished.
NET is also a staked resource and recharges similarly to CPU.
The initial staked amount of resources should allow you to send 10+ transactions per day for a long time. You can use third-party services to stake more EOS to your account, if necessary.