Hello, I am just wondering a little bit about the DSLR world. 1. Is the Nikon D3000 a good beginner camera? I love taking pics of nature, random things and pets/poeple. 2. Where can I find reviews for cameras like this? (websites, books, etc.) 3. What do I need to know about DSLRs? 4. Do you have any suggestions about different DSLR's or SLR's? Thanks so much!