Contouring help?

Any tutorials or tips to help contour my face? I have never touched foundation or concealer to even begin to experiment. Some videos I’ve watched are a bit confusing for me I guess? It’s like what I’m watching is either too fast or I just don’t know what exactly I’m looking for. So the basics of basics would be much appreciated. Thank you for reading ʕ⁎̯͡⁎ʔ༄