I wish myetherwallet was more user friendly so we could finally start seeing mass market adoption. I'm not sure why Vitalik has not prioritized this development more. I think the reference points people have made are solid, I would use the private key to login, and make sure you have it backed up multiple places in case your computer crashes. Most functions can be performed from the "Send and Receive" link.
Yes actually myetherwallet is quite easy to use, but some people have difficulties when first using it, including I used to have experienced similar things. Maybe there should be some changes to make the display more user friendly. But basically I really appreciate about the features and security owned by myetherwallet. Just a few fixes and I'm sure myetherwallet can be a wallet that is very easy to use and certainly better than it is today.