I don't. I've got more than a few hours, less than a lot. IIRC, just about to break 5k (haven't bothered looking/totaling the pages in a while). I still realize that there is a lot I don't know, and IMO, I know just enough to not be dangerous. Personally, I think the 1500hrs thing, with the carve outs it complete BS. No amount of studying is going to prepare you for that first real winter storm, when you are deicing, figuring out HOT's, getting a call from the back about the passenger that just got up to use the Lav, getting pulled out of line because he hasn't come out yet, then the snow intensifies, RVR is getting lower so you have to let dispatch know you now need a T/O alternate, do we have the fuel, how close are we to out HOT? The printer just ran out of paper, I need to have the FA bring up a new roll to print the amended release. How long can we sit here and still have the fuel to launch? "Bing Bong"...."Is that passenger back in his seat yet? We're next in line!!!" Is the QRH finished for de-icing? Did we run the checklists? Here come the T/O brief. Wait, the last airplane just reported braking action of poor/nil. Now they have to run the truck down the runway for a MU value. We have 6 minutes left in our HOT. "I'll re-run the numbers with the latest report to make sure we are legal, then we'll re-run that checklist again when I set the new numbers."
Dealing with crappy weather to get airborne is a very dynamic environment. Landing behind an airplane that just reported braking action as poor/nil can really screw up your day. Don't kid yourself. Reading a book, studying for a test can not compare to actually trying to get airborne legally.