Read up on the forum, those that do import use banggood, ive had great resultsusing them.
Starting out can be messy, lots to consider. When it comes to light switches, my end game was always to keep the wife happy, she isnt a smart tech fan and prefers to have some form of mechanical feedback. Myself, ive never found a touch switch I like, so the compromise was easy, all of my light switches use Sonoff mini's and mostly look and function as normal, some have "special features". Redundancy is important, all my devices are flashed with ESPHome, so my devices function without internet, and even stay functional if my network or server is down (it happens when you dont expect it)
I have "dimmer switches" on some of mine, as I use "single click" and "double click" to do separate things. A good example is that a single click turns the lounge light on, but double turns the lamps in the lounge on.
I recently saw a great post on another forum using both smart bulbs and sonoff mini's.
The added bonus is that many smart bulbs are dim-able.
Make sure you have good wifi, and decent coverage everywhere, at some point your run of the mill router wont keep up anymore.
Watch all the youtube videos out there and see what tech is available, see what others are doing and using, find the nice stuff and implement it early.
Stair lighting comes to mind, passage lights when walking a night, for the most part to me its all about convenience.
