Hello - I'm new! HELP!

Im new here & just have a few questions for now -A previous post about my rack & penion for now. I should be getting the rack boots tomorrow from moss motors. I dont know where to fill the rack with 90 w gear lube? Do you fill the boots? HELP :eek7:

On the top of the rack where the steering shaft goes in there is a plate that you take off to fill it. You have to be careful because there are shims and I believe a small spring in there that you don't want to lose.