I have not been spinning as long as some of my friends, but I can tell you that it is better to over spin a little than to leave it too loose. I did that once and the project that I was crocheting slowly fell apart as I was working because I simply did not spin it tight enough. It is natural for the yarn to twist some when you release the tension, just be careful when you go to pull it tight again that you don't create any knots or tear it. Usually when one is spinning it is best to keep some tension on it at all times, or it will twist and even spin itself out the other direction causing it to loosen and fall apart. It is easier to keep a good tension on a wheel than a spindle but with a little practice you get used to the spindle too. I am always glad to hear of a new spinner, I hope you have lots of fun.