I heard something about ensuring my ships... where can I do that?
Your ships are always insured....
Providing you have the funds to cover the excess. Insurance in Elite work, exactly like in real life, the value of the ship dictates the amount of excess you have to pay, eg.
your ship is worth 30,000 credits (if you have none backer version), 95% of thsi 30,000 CR is covered, but you pay the excess 5%, so the maths are...
30,000 - 95% = 1500
So you pay 1500 credits if you destroy your ship, so the more your ship is worth the more you pay to get it back exactly how it was.
if you do not have the cash to pay the excess, you go back to a basic sidewinder.
hope that helps.