The best advice I can give you is to find a keyboard club near you, and attend a meetup, before you ever buy anything.

That will let you test out a bunch of different parts, not just switches.
Testing those things yourself, in finished condition, will allow you to see which items appeal to YOU, rather than trying out a bunch of blind recommendations.
The even better part is you get to test everything out for free because somebody else paid for it.

The first answer you want to have, before you invest in any switches are whether you prefer linear, tactile or clicky switches.
Beyond that, you also have spring weight to consider.

Lighter springs are better for gaming, but can cause typos for a lot of people, especially those with heavy hands.
I'm on the opposite end of that spectrum, where heavier springs cause me to miss letters when I don't press the keys far enough.

In the slightly more advanced category it would be nice to figure out which type of switch you prefer as well.
The different switches all have different feel and sound to them, so what somebody else prefers may not be what you prefer.
Besides the multitude of different MX-style switches you have to choose from, there are also other types of switches completely, like Topre, Alps and buckling spring.
Each switch has its own following.
There are also low-profile switches, which some people prefer to higher profile switches.