Hello and welcome to the community :)
Firstly, where do you live? Location and the quantity of sun and light you have available.
A general rule of thumb is that the cheaper a succulent is, the easier it is to grow and that's a good place to start. Some succulents don't need much sun and others do, so base your choices on what the light is like where you live.
Tell me about your location and then I can point you in some directions from here