You can rough turn your green bowl blanks, but leave them THICK and be prepared for cracks and movement. Many people will rough turn a green blank and then put it in a brown paper bag with the shavings for several months or longer.
Never assume that blanks are dried unless they're specifically sold that way (rare). Remove the wax from the face grain for drying, but leave the end grain waxed...Otherwise you're guaranteed it'll crack to some degree.
Drying is a slooooow process. For freshly cut lumber, plan on a year of drying per inch of thickness. End grain should always be waxed, painted or sealed with anchor seal.
Do some online research of drying blanks using denatured alcohol. It works pretty well on some woods, not at all on others. It still isn't super fast, but it is faster than conventional air drying.