Tartan Terrier has said it all, but one thing you may find will give your brushed boots that extra shine is a pair of rolled up womens tights(though i prefer stockings for obvious reasons). Once you have finished brushing go over them with the tights, also useful for getting dust and dirt off your best boots prior to bobbing them up.
Enjoy hours of fun!
Use it to get into the crevices and seems of you're boots with polish, the ones you get issued are a pile of sh!t but eventually you'll probably end up buying a pair of you're own. When you've spent Â£140 on a pair of you're own you'll be wanting to take extremely good care of them and you can then get damp treatment and leather treatment etc.
But don't worry about that for now as the only black taxis you'll be wearing during phase 1 will be the issued assault boots as i mentioned before, you're section commander will instruct you on how to look after you're boots during the first couple of days i'd imagine.
SSSHHHH, I'll tell you a secret...Jacobien oak varnish, once you've done training buy a tin of it, clean the toe caps that you want to be the bees knees, cover the welts with black maskers, use a matchstick and drip...YES...drip on the jacobean oak varnish, it will give you a lifetime of hi gloss footwear...take you a complete saturday afternoon but hey, every bootnck on palace duty since colour cameras has used it.