Hi,

A couple of years ago, I bought some bitcoin ( about £10gbp) . Then I forgot all about it, and forgot what I did with it.

Now that the bitcoin rate has gone up, I decided to search for any trace of the purchase.

I eventually found what looked like a "key" which I had emailed to myself - a string of numbers and letters. I didnt write anything else, just this string of numbers and letters.

I have mycoleum with  "Bitcoin HD" account. I decided to enter this string of numbers and letters. I can't remember exactly how i did this to be honest, i think it was trying to import this key. anyway, I can't be certain, but I "think" this import seemed to work. mycoleum now has two accounts: the already-existing "Bitcoin HD" (hierarchal deterministic) which I had before, and a new "Bitcoin SA" , (SA - which Im guessing could mean Satoshi? ).

Anyway, a few questions:

Have I done this correctly, and can I now use this imported bitcoin in mycoleum and convert it to GBP?
If someone had "gotten" hold of my private key before I added it to mycoleum, would adding it to mycoleum still have worked?
When adding this private key, what exactly is it that I added? Is it a wallet?

Thanks