Low cost dairy – F.W. Owen rocks, too bad he isn’t updating any more. I tried mailing him but no response. http://userpages.bright.net/~fwo/
Greg Judy is all about low-cost grass-fed beef. His site isn’t updated much but his books are good: http://www.greenpasturesfarm.net/
Greg has an interesting talk on youtube: http://www.youtube.com/watch?v=W6HGKSvjk5Q
Article about Greg: http://www.angusbeefbulletin.com/ArticlePDF/MobGrazing%2003_10%20ABB.pdf
Greg does respond to questions posed as comments on his site. The talk is worth watching. He holds farm tours a lot, if you are in the area. Green Machine Farm goes to them.
For finishing beef I got the most out of Anibal Pordomingo, who I found through a book by Allan Nation: https://grasspunk.com/2012/06/08/anibal-pordomingo-and-grass-fed-beef/ The talks he gave are excellent if you want to finish on grass.
Salatin’s article on tall grazing: http://www.acresusa.com/toolbox/reprints/May08_Salatin.pdf Salatin is a media star of the area, he’s a very good speaker and his farm is successful so there’s a lot to learn. I am curious as to how he finishes his cattle.
Abe Collins does no-grain dairy and also does tall grazing. He’s a pioneer in this space.: http://newfarm.rodaleinstitute.org/features/2006/0606/grazingtall/collins.shtml
Multi-paddock grazing research: http://today.agrilife.org/2011/06/15/agrilife-research-multi-paddock-grazing-is-superior-to-continuous-grazing/
The totally amazing threadzilla of agmantoo talking about his system of rotational grazing. 76 pages so far and one of the most useful reads in this space, if the longest. He’s very quick at answering questions, too.: http://www.homesteadingtoday.com/livestock-forums/cattle/286704-any-ideas-converting-rotational-grazing.html
Cattle Today forum is good: http://www.cattletoday.com/forum/viewforum.php?f=14&sid=34f9f6bdafd4a864fe94ae40ad773db1
Livestock and Forage for the British perspective: http://farmingforum.co.uk/forums/forumdisplay.php?f=18
There’s tons more but that’s a start. If you want something to help smallholders with cows, one place is the homesteaders cattle forum where that agmantoo thread is from: http://www.homesteadingtoday.com/cattle/