Refer to the links mentioned below. They will provide you all the information on installing, administering, using and developing with AEM 6.1 and AEM 6.2. Information provided on these pages is helpful for both AEM beginners and advanced developers. You will also find AEM concepts, architecture/topologies and best practices.
All AEM public training courses are currently offered only on 6.3. If you take a public course, you can request an earlier version of the workbook during the training and the trainer will probably be able to help you out.
Thanks for responding. Actually i have worked on AEM 6.0 with classic UI but now as per the enhancements i want to learn and start working on upper versions with touch UI so want some guidance to how can i use my 6.0 Classic UI knowledge and learn other versions so looking if there is any knowledge to which i can refer.