Anagram: All the right letters are in the clue, just in the wrong order
"Cultivate wild forest (6)" gives FOSTER
Charades: Replace words in the clue with synonyms or abbreviations
"Girl left behind (4)" gives LASS
Container: Put one part of the clue around another
"Greens sad when touring LA (4)" give SALAD
Reverse hidden: The answer is hidden backwards in the clue
"Clown appears in the mirror holding cookware (3)" gives PAN