It's possible to DIY tutor for the 11+ even if it's a superselective you're aiming for. I hope I can reassure you when I tell you that so many other parents have done it successfully too and you have a fabulous advantage if your DD is willing to work at home? 
You're starting nice and early but you still have to try to be as focussed as you can possibly be, especially with the situation you have at your DD's school. I'd also recommend that you try and research/find out as much as possible about the 11+ exam requirements in your area, or for the schools your DD is going to sit for. That could save you both a lot of unnecessary work and heartache.
One of the first things you need to find out, is what tests will she sit? If it's Verbal Reasoning (VR) and Non-Verbal Reasoning (NVR) then that can be a little easier to work on at this stage.
racingheart has given some good advice.
I'd highly recommend going here and clicking on your county...
www.elevenplusexams.co.uk/forum/11plus/viewforum.php?f=64
It'll give you so much invaluable, and more importantly accurate/relevant information.
The Bond books are a good starting point because no practice is wasted but be aware that for VR, Bond does many question-types which won't come in the real test, especially if they're set by GL Assessment who only cover 21 question-types. I have heard of children who've only been tutored with Bond, who were completely thrown in their 11+ when they sat the VR paper set by GL Assessment 
If you have to do Maths and English too, which my DD's did, then the Bond English and Comprehension books can be useful, even if your 11+ exam doesn't follow the Bond format exactly. These are age-graded, in the same way that the VR and NVR books are. The have a series on how to do 11+ for each subject, which are very useful. IPS do an amazing "How to.." book for VR!
Here's a good little site for help on 11+ English Maths, VR and NVR, we used the Maths a great deal because even though the exam was held in September of YR6, DD2 was expected to have covered all of the KS2 syllabus in order to sand a fighting chance on the day.
www.11plusforparents.co.uk/
There's lots of very good American sites out there for English and Maths, mainly set up for the home-schooled children but they were a fabulous resource. Search under YR group and one above and below and you'll get lots of wonderful stuff.
I could bang on for ages and give you tons more resources but I won't at this point, as it can get very overwhelming 