Rambling time, as I just finished. 
 Do I really have to wait a whole year for The Hammer of Thor? Gah! I'm liking this series as much as The Heroes of Olympus. 
 I love all the snarky references to Percy and Jason (view spoiler)[such as a Sword disgusing itself as pen being incrediably stupid, and Jason's constantly passing out (hide spoiler)] I'm also glad we get to see Annabeth. I want more Annabeth. 
 Sam is all kinds of awesome. She's a badass, and it's great to see a positive portrayal of a Muslim character, especially given the crap that's been going on in Canadian politics. I especially liked (view spoiler)[the parallels with her being Muslim and a daughter of Loki, she's just assumed to be 100% evil by the demigods and normal humans. She's more than managed to overcome that. As much as I love Annabeth, I think I love Sam even more. (hide spoiler)] 
 Hearth and Blitz are awesome. 
 Thor is freaking hilarious. I like this version of Thor better than the Marvel film version. 
 (view spoiler)[Otis the goat is so much like Eeyore, I loved it (hide spoiler)] 
 Again, do I seriously have to wait a year for the second book?