Not helpful, PowerBuilder.
As puff said, we can only give general advice at this stage. You might have injuries or muscle imbalances that mean you need some different work, or something on top of the basics. Or maybe you're uber-strong already and are ready for all sorts of advanced stuff.
I would say that Westside is not for beginners. If you have been doing isolation stuff for a year and are genuinely skinny (not just talking yourself down), then you are still a beginner.
As a beginner, just squat, deadlift, bench, row, chinups - all the basic compound movements. The exact rep range isn't important, though you should pick a particular rep range (5, 6-10, whatever you like) and stick to it so you can monitor your progress. If for example you bench 40kg 3x6 on Monday and 40kg 3x7 on Wednesday, it's clear you've made progress; 40kg 10,8,4 times and then 45kg 12 times, it's not so clear.
In every session, legs, push and pull. Do a deep knee-bend, put something over your head, and pick something up off the ground. Those somethings can be just yourself (eg pushups and inverted rows). In every session, more than you did before - more weight, or the same weight but more reps, or the same weight and reps but another set.
When you can bench and row your bodyweight for some reps, squat 150% it and deadlift 175%, and do several dead-hang chinups, you're no longer a beginner and fancier stuff will be helpful. And for that, I refer you to the more experienced guys like Fadi and Markos, I only know about laying the foundations.