>>2501813Its fine to get a cheaper shoe that is just slightly tight so you get used to the sensation. See how it fits and give them a try. You can always get a better shoe if you really like climbing.
>>2501956Depends on what kind of climbing you like, but if you have gyms near you its a great place to start. For bouldering I dont think you have to pay for a class, just start from the easiest routes and ses how high you can go. If your gym has rope climbing too you can usually make friends there and see if they also climb outside and go from there. Good luck!