Making Selections - What is this Called? Can it be Done?

I want to set up the homepage of one of my websites to allow people to make selections. So if it's about cars for example, they can select a make. Then in a different form they can select a model. Then in a different form a color. Etc. Etc. Finally they do this they can see results for what they have picked. What is this function called? Can this be done by a novice? And how easy would it to be to edit to additional categories and update for new results? You'll have to forgive me I don't know what this is called but figured it would be considered an element of web design.

If you don't have programming experience then your best off buying a script for it. If your using WP then do a search for plugins that fulfill this function or look at purchasing a WP theme that already has the function built in.

Can this be done by a novice?
=> Depends.It takes time to learn coding. Not an easy task nor very hard. You also need to learn other things like database etc.

Combining user inputs from one or several forms is not a function and it doesnt have a technical name. The complexity of what you want to do depends on many things. Such as the amount of variables involved. How will the input be displayed to the enduser and so on.

Presumably you have a wordpress website or something similar and you'd be best off to install a plugin that does this for you, to a certain extent at least.

You are looking for form input arrays. For your example, you could want use drop down lists.
Then use a javascript validator and display result when all inputs are correct.

Usually, such functions called Search filters (sometimes it can be taxonomy filters product filters, etc). There are many plugins for wordpress for this