Quote Originally Posted by dennisvz View Post
1. Regarding "layouts - horizontal, vertical, etc" -- is the only benefit to using one of the layouts is that the form/GUI will resize proportionately?
The main benefits of layout is that you get stable arrangements.
Space requirements of UI elements can change, e.g. due to different font or font sizes, language, etc.

Layouts make sure that elements are resized and repositioned as needed.

Quote Originally Posted by dennisvz View Post
If I design one that fits on a laptop and/or desktop, does it matter if the user can resize the form? Is there a trick to picking a layout for a non-linear form -- like one that has 9 frames of different sizes -- I have tried hundreds of times, but the frames (and labels, etc) keep jumping all over the page once I hit one of the layouts. I have read the literature, but just cannot seem to get it.
The usual workflow is to layout items together that belong together, by selecting them and then selecting the approriate layout.
A container widget's main layout is then often just a vertical or horizontal arrangement of these sub layouts.

Quote Originally Posted by dennisvz View Post
2. When I completed my GUI (without a layout), I clicked to view the code, and received this error message "Unable to launch C:Python34/lib/site-packages/PyQt4\uic". I have Python 3.6 installed, but I do not know what this message means.
The UIC is a tool from Qt in your case PyQt. I generates code from the XML document that QtDesigner saves to.
Check the path, see if the executable is there.

Quote Originally Posted by dennisvz View Post
3. I use PyCharm as my IDE and have written a program in it. Once I figure out question #2, how do I get the GUI code into my PyCharm file, or how do I get my PyCharm file into the GUI? Or is there another way to link them together?
There are different approaches.
Usually the class generated by uic is imported and then used inside a user defined class, but is is also possible to derive from the generated class.

Cheers,
_