Changing coolant/oil ?

I'm in the process of changing my coolant and oil. I've read how to change the coolant, but need some guidance on how to run the bike without the tank. I bought some 3/8 hosing, but how do I connect it to the hose which goes to the petcock? Also what size oil filter do I need? This is my first time performing these services, so the help would be appreciated. Thanks