is there a way to browse themes rather than "search"?

hi. i am looking for a theme for my website, and i am not knowledgeable enough about the layout requirements of the website as of yet to use the search function to find one. is there a way to browse through the themes? if not, perhaps you could suggest one or more for me … it will be a professional website for other professionals, the website will be primarily text — optimally alternating color backgrounds to differentiate one paragraph from the next or, alternatively, using a bold colored border around each paragraph, a column either on the right or on the left, the capability to add another column on the opposite side of the page at some point for advertising space and/or blog entries. there will be a header with logo and small picture, and lots of linkover/buttons/ check boxes inserted at the end of paragraphs. any suggestions?