lagering

Im just starting brewing again because I'm skint, last time was 20 years ago. I have a few questions. I'm doing a Geordie Lager which I gather is a pale ale. I'm using a diy airlock because I live close to pubs in town and there's vinegar flies all over. Should I pay more attention to bubbles...

Well guys Lagering my All grain Helle Export Lager in the deep freeze with temperature control. The worry I have is the head space and oxygen coming in contact with the lager for a long period during the lagering phase. The lager had a warm rest phase for DMS. Should I worry?? M ps. The tube...