Help With 'Venus and Adonis' Interpretation

Thanks to someone's 'Venus and Adonis' PDF, a poem I haven't read for several years, I've got a couple interpretive questions. Anyone good interpretations of this work I should look at first? Anybody want to take a stab at it? Specifically, I wonder about . .

1. the Baron of Tichfield designation (was this in fact Wriothesley's title? apparently it was one of his estates?)
2. is there a version out there with quote marks around what the characters say in the poem (what would be dialogue in a dramatic work)? This would certainly make it easier for rubes like me to follow.
3. the line 'He red for shame but frosty in desire'. Is this meant to be 'frothy' (or something else)? If not, how should I interpret 'frosty'?
4. the use of the exclamation 'O'. It does look like a subject at the same time. Any interpretations of this? (Yes, I see the possible reference to Oxford.)
5. what about all the sexual stuff? Was this what passed for smut in those days?
6. after Adonis dies 'A purple flower spring up chequered with white' from his blood. (Missing 's' on 'spring' aside . .) Possible meanings for this? Flag/banner/standard? Family crest? Sexual connotation?

I also wonder what the general take is on this artistic/poetic quality of the poem. Any/all help appreciated.