design newcomer for woodworking

Hey all! I just took up small shop woodworking as a "to-do" for my life, a few months ago, and I am interested in doing my own designs. I have tried most of the free CAD proggies out there, none of them have measurement parameters to follow such as pre-setting a size for a rectangle, or rulers that can change to whatever type of measurement. Photoshop does that.
I do have some serious ADHD in my brain so I have decided to draw with paper and pencil. I have tried it on a few designs and I really enjoy it, so can anyone tell me of websites that freely tutor all the basics and rules, principles of manual drafting?
Thanks much in advance!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.