Note: I have no affiliation to the Master Teacher organization mentioned below and I get no advertising revenue from them. I just came across a stack of these pamphlets in my inbox when someone with a subscription was passing them along from teacher to teacher to be read. The information below is presented as a public service as a variety of teachers I've met feel these pamphlets are a very valuable resource.
The absolute best advice is captured in The MASTER Teacher pamphlet series. Each pamphlet gives concise, realistic, easy-to-follow steps on how to handle common situations. Each pamphlet is only one page long and sums up what it seems to take an entire book or course in teacher education to convey. Sample titles include: