I have a pretty decked out space in my basement now, but I started small with a pair of adjustable dumbbells and a bench at the end of 2020. I challenged myself to max out on those dumbbells (50lbs) before investing further in things like a barbell, squat rack, etc.
Personally, I find it hard to come up with routines on my own. I used a personal trainer for a few years pre-COVID as a means of forcing accountability. Personal training can also help teach you / get you used to weightlifting, especially with the more advanced compound lifts.
Now I use an app that generates routines called Fitbod, but there are many other apps like this that will take the guesswork out of things. You can tailor the routines to your desired equipment / duration.
The trick for me was to start small, and focus on consistency. Whether that is one day a week or five, the key is to regularly come back to the practice. Eventually, it got easier to just “show up” and push myself further.
Hope this helps!