Great e-book Amigurmi and crochet e-book bundle. The top tier of the bundle is $18 for 23 ebooks, it has two lower priced tiers which include less books if your budget is lower. I have used this site many times and you can pick a range of what you pay for the bundle and how much goes to certain charities... the different levels have different minimums.  Some really great books in there I've been meaning to get and I already have a hard copy of the Stitch dictionary.  If you have an Amazon kindle account to read, you can set it up to have some of the ebooks e-mailed to your specific kindle account. (you can find that address within your Amazon account.)  https://www.humblebundle.com/books/amigurumi-and-crochet-from-open-road-media-books?hmb_source=humble_home&hmb_medium=product_tile&hmb_campaign=mosaic_section_4_layout_index_4_layout_type_threes_tile_index_2_c_amigurumiandcrochetfromopenroadmedia_bookbundle&fbclid=IwAR2gVKpmU1s0_yq6xO05r9dcSto9GzHiAStMh_vk4rTH4Nz_CqALe7wDG6o

This is the book I referenced on this weeks Crafter Gathering last Wednesday night.  I recommend looking for used copies online if the Amazon one is too expensive. I haven't made any of the patterns out of it but I have wanted to.  It calls blankets rugs, and one of the blanket patters are a group of tunisian in the round squares - this uses a double ended hook to do tunisian in the round.  I've made a few squares from another pattern and a cowl in tunisian in the round. I'm still learning it.  

Crochet Techniques (Milner Craft Series) Paperback – March 4, 2008

by Renate Kirkpatrick

 https://www.amazon.com/Crochet-Techniques-Milner-Renate-Kirkpatrick/dp/186351371X/ref=sr_1_1?crid=1W5UL5VP8HVF5&dib=eyJ2IjoiMSJ9.zOgAh51e8eXKzSwsMMJs0PbeWr31dfNpj5WNkxbMuX3AsiB2sHOXL3IdNO4zMceApJZl9jmabq5MmT5OUpKcs-JKOOi3dsEik9Jhtjh0TXIOkPKouKZJ4kp00OqAtC-1._6yQ0TW-x8WU07gE_QelpDBD9KGjqlrhfzof6jDLEj0&dib_tag=se&keywords=crochet+techniques+by+renate+kirkpatrick&qid=1708707479&sprefix=%2Caps%2C146&sr=8-1