honestly, dont be afraid to ask here. if your question doesn’t get any responses, that usually means people don’t know how to do what you are asking, or its a really basic question
as for step by step “how to make this thing”, break down what you are trying to do into bite sized pieces, and build up from there. for example a good place to start would be “how do i create a menu”, how to i create a save game system", “how do i spawn actors”, “how to i work with object references”, “what is casting”, ect. all these are good, bite sized questions that can help you get started and give direction.
you can also straight up ask things like “im making a rhythm/shooter/builder/voxel/whatever game. can someone give me direction for how to get started?” im sure someone who has experience with those types of games will be happy to help.