If you're a beginner, I'd just go with the Backblaze "native" service, it's really super simple to set up, you can access your backup directly (and all the individual files) through the web and iOS client (I've used it as a recovery tool for a couple of accidental file overwrites), it's a couple of clicks to a complete restore - and, if the event it's necessary, you can order a physical backup copy on a flash drive / HDD.
$6/machine/month, unlimited storage.
A few caveats, but nothing that would be affected by what I suspect are your backup needs.