Subject is the unstated "you"; two verbs are "read" and "learn."
unstated main ideas are statements that have no topic.
What was the unstated goal of the Wilmot Proviso?
Stated premises are explicitly mentioned in an argument or discussion, while unstated premises are assumed to be true but are not explicitly stated. Both stated and unstated premises play a role in supporting the conclusion of an argument. Unstated premises are often implied and can be inferred by understanding the context of the discussion.
A fact left out of an argument.
The anagrams are unstated and untasted.
Traditionally, yes, but many modern "authorities" accept single words or other fragments of traditional sentences as full sentences. Also, note that sentences with verbs in the imperative mood usually have an implicit but unstated subject, "you".
An Implication
Topic Sentence
The simple subject is the implicit pronoun "you", the natural subject of an imperative mood verb such as this sentence contains. "Class" is an appositive to the unstated "you" and should be followed by a comma, as is normal for an appositive that is the first word of a sentence.
That can be a logical statement. It can also be an unstated truth that, following logic, you can deduce that that no chocolate on the hands means that the cookies were not touched by those hands.
The verb phrase "take cover" is in the imperative mood in this sentence. The imperative mood is an order, as when you tell someone to do something. The unstated subject of the sentence is "you": "[You] take cover..."