Mate, the question of which routines to stick to you have got backwards. You don't figure out whether you're "intermediate" or whatever and then decide your lifts. You just start lifting, and keep doing the same thing for as long as it gets you good results.
What you do is this: begin with a full-body routine of basic compound exercises, 3 a session (legs, push, pull) at least twice a week. Do the same 3 exercises every time. In every session, do more - more weight, more reps or more sets.
Keep doing that until you can't increase the weights, reps or sets from one session to the next on
any of the exercises any more. Once that happens, look at your diet and rest. You are probably not eating enough - to lift more, you have to eat more. No, more than that. Eat more. And most Westerners don't get enough sleep, we're too busy playing computer games or something late at night. Sort out your nutrition and sleep and then see if you can keep doing more, more, more.
At some point you stall again. It's then time to discover another exercise for each of legs, push and pull. Keep doing the old 3, but alternate in another workout with the new 3.
In most cases that approach can take you far. See for example
Shorty.