[span style="font-style: italic; font-weight: bold;"]How computer savvy do you have to be ? Can anyone with basic computer skills do it ?[/span]
No computer savviness is required. Anyone with basic computer skills can blog. Basically if you can use this message board, you can blog.
[span style="font-style: italic; font-weight: bold;"]How much time do you need to invest to begin a successful blog and how much time do you need to invest daily ?[/span]
You'll want to plan on maybe an hour a day, roughly speaking, depending on how much you plan to write. Oftentimes you can get by with less, but it's a long-term effort. Most people start a blog, and it's fun for the first few days. Then it becomes a task, and eventually a chore, and then they stop. It's hard to keep at it for months or years.
[span style="font-style: italic; font-weight: bold;"]How much pre-prep time is required before you get started...gathering photos etc. ?[/span]
This all depends on what you plan to write about. Sometime no prep is required, you just start writing. Sometimes you'll want to find sources and images to use, sometimes not.
[span style="font-style: italic; font-weight: bold;"]Can you or do you make money blogging ?[/span]
It's possible to make money blogging, but it's difficult. Don't let anyone tell you it's easy, because it's not. You'll need to attract an audience of followers who like what you write and who'll want to come back for more again and again. I'd guess 1 out of 100 make *any* money blogging, and it's not usually significant money- maybe a few dollars here and there.