In my opinion Aikido is very hard to leran by video..unless you have a backround in traditional Jujutsu that has similar tai-sabaki movements.
But if you are in a situation as I am assuming...no time, no money or no instruction nearby...
I like the videos of Kensho Furuya a great deal. He has of way of instructing a complex art by making it simple.
I also enjoy the history that he details and his videos are quite complete to the extent that a video set can be.
Also know that not all Aikido is not true Hombu Ueshiba Aikido.
You have Tomiki, Shioda and others some that are rip offs such as Nihon Goshin