The bright stripes cowl and the sofia cowl patterns are rated as easy from Red Heart. These patterns and numerous other cowl patters are provided as a free download from Red Heart.
Short descriptions, links for the patterns and video tutorials for a classic chunky cowl, classy cowl and infinite shell cowl are provided for free by Mikey at the Crochet Crowd.
Lion Brand Yarns also offers numerous cowl crochet patterns for free once registered, also for free, with the website. These patterns are rated as beginner through intermediate level one through three. A photo example of the finished product is provided.