If you just want to play at home, bake an egg tart first, as upstairs said, buy ready-made egg tart skins and pour the egg tart liquid according to the formula. It can be simpler, even the egg tart liquid is ready-made, just buy it and pour it in.

If you want to learn, it is not recommended to bake egg tarts. It is actually difficult to bake egg tarts completely by DIY, mainly because it is more complicated to open the crust. As for the kind of ready-made egg tarts, it is not called baking egg tarts. You can't learn anything by baking them for a lifetime. I suggest that you bake cookies first, find the simplest formula in books or online, even without sending any ingredients, and just follow the steps step by step, which will generally not fail. Successful, try to choose a formula that needs to send protein, because protein is easier to send than whole eggs, and the state of sending is more intuitive than butter, which is easy for novices to master.

Just bought an oven, you may not know the temperature deviation of the oven. I suggest you buy a thermometer for the oven and measure the temperature deviation of your oven, so the success rate will be higher.