How do we get first aid if hospital not accessible? is there a site or app for info?

Call your locals...: Call your local health department, paramedic services etc... Every town has some type of emergency plan and so calling your municipal offices to find out. If in very remote location, you should plan/purchase some type of emergency kits...Often available at local pharmacies etc..Or even online... If you are new to the town, ask, ask, ask.. Have emergency #s ready! good luck.