Well, the good news is there are plenty of examples in this novel. I will give you a few from Part 1 of the novel to start you off and then you can go back to the book and see if you can find some more - careful re-reading of this novel will help you find some more. You might just want to read Part 1 again and see the examples I have picked out in context and then carry on to find others.
With this brass nozzle in his fists, with this great python spitting its venomous keronsene upon the world...
This simile compares the hose to a great python, which is interesting as the hose is compared to a monster which is engaged in destruction. This simile therefore emphasises the horror of the burning that Montag is engaged in.
He strode in a swarm of fireflies.
This is another simile that compares the remnants of burnt books that are flying around to a swarm of fireflies, again linking the character of Montag with fire.
Her face, turned to him now, was fragile milk crystal with a soft and constant light in it.
This metaphor used to describe Guy's first impressions of Clarisse. What is interesting is the attractiveness of Clarisse compared to Guy's wife and also how vulnerable it makes Clarisse appear.
As for imagery, any scene that is trying to evoke the 5 senses (and there are lots of them) can be used as an example. Hope this helps and good luck in finding some more examples! This is great practice, so if you can read the text and pick out some literary terms by yourself you are doing really well.