Hi guys,
Tried doing this tutorial 3 times now and I'm still getting this issues. I tried to straighten my edges and be careful about aligning my vertices properly. But I'm still running into the issues with using n-gons and beveling modifier as well as auto shading by angle degree using the same steps in the tutorial. Be helpful to know what I'm doing wrong here.
thank you guys. 
It could be a couple of things, but since it's on various places on your model, it'd be better I think if you can share your file for use to look at it, correct all those issues and report back, point everything out so you get a better feel of what's going on all over. Upload it and post the link.
