Hi, Next fall i will be taking Intro to Abstract Algebra so i was planning to give it a shot on my own during the summer break, but i don't know what would be a good book to buy online, that is not too expensive. I would like the book to be quite rigorous, like very proof based one, but that starts from pretty elementary stuff and that moves to quite abstract and difficult matters. I have looked some of them online, but i hve no clue what would be the best one. Based on your previous experience, what book would you suggest me to buy? Thnx in advance!