Help regarding android 1.5 and 2.1 (beginner, issue of Book Version)
<p>I am new to android and last year i bought two books of <strong>android 1.5</strong>. But at that time i was busy in my project so was not able to work on android. Now i want to start android again. Should i go for those books or should i buy new editions 
Is there any major change regarding basic learnings?
Two books i am having are:-</p>

<p><a href="http://pragprog.com/titles/eband2/hello-android" rel="nofollow">Pragmatic Hello Android</a>  (New addition of this book is available, But still in beta phase)</p>

<p><a href="http://apress.com/book/view/9781430224198" rel="nofollow">Apress begining Android</a>  (Dont know about this whether new edition is available or not)</p>

<p>Please let me know. 
Thanks</p>

<p><strong>EDIT</strong>
here i am not asking about the good books of android, as there are lot of questions regarding that. I can find out from them.
My question is purely related to <strong>change in version</strong></p>
