This was sort of the divide/issue my wife and I had watching Season 1. She hasn't read the books and often had no clue what the hell was going on, and I have read the books (admittedly a LONG time ago for the first couple) but remembered just enough to be a little annoyed at some of the changes (Mat's character change I didn't like)
Obviously you make some concessions for TV... but whereas GoT made concessions in walking you through history of every "important" event, they fairly delicately removed what wasn't absolutely essential (like you could have watched GoT and never read/deep dived on the Targareans, Robert's Rebellion/etc at all and been fine) WoT has a harder time leaving some of those things on the cutting room floor because they are absolutely essential to what is happening in the present. Just randomly seeing Lews Therin towards the end my wife was like "Who is that?" which meant we had to pause the show and I had to go on a rambling 10 minute deep dive. Similar with Logain and why being a "False Dragon" was a big deal..etc.
Overall it was entertaining enough, we'll watch season2... but I think in the rush to make the next GoT they've not yet quite got the recipe right for satisfying the die hards while still appealing to the casuals... Still plenty of time to grow however.
My Blog -
http://leegoocrap.blogspot.com