Hi annie, Red Horse Products do a brilliant smeary-on gunk called Field Stuff, which you can pack into central sulcus and any other manky bits of the frog (once you have dug out the flappy parts covering them with a very sharp hoof knife). It sticks!!!
Hibiscrub is great for knocking thrush on the head, as has been said. If you go barefoot though, you are supposed to renounce things like stockholm tar.
Properly trained equine podiatrists are sometimes hard to come by (there may be some near you but they may be extremely busy, this is what I have found and I have gone back to my old farrier for an easier life). You may be surprised how many farriers are coming over to barefoot way of thinking and I got very good results supervising mine closely -- if your farrier cannot do a pasture trim I would be amazed, and the trim you probably want, if you are going to adhere to AANHCP ie Pete Ramey/Jaime Jackson, is really not that far off from a good pasture trim. Make sure your farrier is very conservative with frog, sole and bars, and watch over him as he works. Watch to see if he looks for overall balance before starting work on the underside of the foot.
If there are serious foot balance issues, run down or overly long heels, contracted frogs etc, then maybe hold out for a podiatrist as farriers often do not see these problems in the same light as us barefoot lot!
If you want to do things yourself, to start off with, you can stick to maintaining the roll and taking off any flair in between the trimmer's visits, and gradually take over from him, if you like, as your confidence and skills come up.
Best hoof boots these days are Easiboot Gloves... I don't use boots any more though so have no direct experience, just going by the current talk. I had a bit of a faff with my boots and eventually gave up, sticking to soft ground when my horse was footy and gradually conditioning him over all types of ground.
Renegades were getting people excited some time back but seem to have gone very quiet.
Good luck!