I understand. I just happen to have one of those computers that only has 30 gigs of memory on it to begin with.
That sounds like a phone, not a real computer 
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With Electrum, I clicked send, entered the address which started with 3EN. And then I clicked Send. However, it remains unconfirmed. I read something about having to Broadcast it? How would I do that?
Did you import the private key (starting with L14) and did Electrum show you a balance?Quote
I just saved it and it said "Note: this is an offline transaction, to send you need to broadcast it"
I'm not sure what you did exactly. Electrum should do this on it's own when you send a transaction.If you've saved a raw transaction, you can broadcast it through https://www.blockchain.com/btc/pushtx , but that's not how Electrum is supposed to be used.