Recently I finished learning the basics of Morse code listening, that is I can listen at a speed of about 25 words per minute and I am eager to start practicing to send. 

Today I got my first Morse straight key. It is an old key from the army of the Socialist Republic of Romania. My first observation is that it needs a bit of tuning. For example, the front spring is a bit weak. Any ideas, any suggestions on how I could connect it to my computer? Following you can see some pictures of it: