Drupal 7.x

Hello,
I am new to drupal and currently I am exploring the Views module. I have a dummy website for a toy shop to learn on.
I have created taxonomy as follows where Category,Ages and Brand are Vocabularies and the rest are its terms :-
Category - (Activity Centers, Electronics, ...)
Ages - (0-2, 2-4, ...)
Brand - (FisherPrice, V-Tech, ...)

Background

For over 60 years, the Aspen Institute has helped connect leaders from around the globe to discuss and engage in important challenges and issues facing our world today.

On my homepage, I have a block called testimonials, rendered with views.
The block renders the newest added content from the content type 'testimonial', in a stripped form, and displays the separated testimonials in a list.
What I'm trying to achieve is to wrap a link around the list item (the parent), wich is linking to a corresponding page.
The link is stored in a link field, when adding new content.
So when when the testimonial is saved, the corresponding list item on the homepage has to link to the previous entered value (the link).

I have ten content types that have tons of fields, including image fields with various image styles, etc. They are all mostly identical, except for a few fields. I would like to create one "master" content type and then copy it ten times. Then I could just change each of the ten copies to suite the different content types I need. This would save a TON of time. Keep in mind, this is all for the same Drupal installation. I'm not trying to copy a content type from one website to another. Is there a way to do this?

I am trying to do a mysql union in Drupal 7 and I can't seem to get it right.

Here is what I want:

(
SELECT uid, nid, created
FROM {node}
)
UNION
(
SELECT uid, nid, created
FROM {comment}
)
ORDER BY created DESC

Here is what I have:

Hi,