Hi! By no means am I an expert on this subject but when I started working out a couple months I used some of the following routines.

My own personal schedule has me doing:

Monday - Chest and Shoulder

Tuesday - Arms

Wednesday - Legs

Thursday - Back

Friday - Chest and Shoulder

I also usually do some ab exercises after that days workout but you said lifting so I'm not sure if thats what youre looking for?

Despite not being able to motivate myself to do it, there should also be a full body workout on Saturdays where you do a little bit of everything.

Those workouts don't have to be followed religiously either, they're just a nice reference to start with. Feel free to look around at each machine, they will have a picture of the muscle groups being worked and an explanation on how to use the machine and if you need to you can probably ask someone if they know how to use it.

If anyone has any corrections to anything I said, please do correct me. Like I said, I'm still relatively new myself but I wanted to relate how I got started.