Hi Ted re the slider I have no prob with setting this. I admit it does jump about when you try and move it but it does not jump to zero. Are you using version 1. 2. 6. or the more unstable beta 1.3.? I suggest 126 is possibly easier to use less glitches.
Make sure you have selected mic and not line in. It would be better if you coud get a good record level during record but there is a facility for boosting or reducing this post record.
There is an amplify under the effects tab. just select all and go to amplify, then increase the percentage by a few percent. You may want to experiment and try it in small increments. Remember you can undo. Tip.... the highest peaks should be just inside the .5 lines both above and below the zero. Above that distortion and clipping comes into effect you do not want that.

It stands to reason that quality input is crucial as the old saying goes crap in crap out. Obviously you want a good quality mic and possibly a pre-amp to get the best sound quality. You may want to consider an interface or small mixer to help with this. Any probs PM me I will help any way I can.

You could of course send me a return plane ticket and I would be happy to come out and give you personal tution.