See if there is a local "maker space" that has a wood working area. You can get hands on lessons in using power tools. Also they will have computers with software that you can use to make measured drawings for planning out your build and designing things like cabinets, bed and such.
Used to be that Home Depot had scheduled in person tutorials on the weekends that taught how to use various power tools.
Talk to the people at a local lumber yard. The regular kind rather than the big box store. Ask if they know someone who could tutor you on basics. Some of the local community colleges and high schools have classes on building construction. There might be some students who already have basic skills in the classes who would work for you part time.
Advertise on Craigslist for help.
Rockler and Woodcraft stores have classes.
Find some old episodes of The New Yankee Workshop to watch. I certainly learned a lot from watching that show every weekend for years.
Best of all do some small projects for practice before you start on the build. You will be a lot less anxious if what you are making is not something critical to your build. For instance make a bird house. Make a small, simple wood step stool. Make a simple wood storage box. Those projects will develope basic skills for measuring, cutting and assembly.