There's lots of information out there, so much, it's a bit overwhelming. As Volunteer said, BeeSource has a "Build it yourself" section with some good options. I also found these plans useful.KISS Langstroth Hive
Honestly, assuming you're doing a Langstroth style hive, there's just a few key decisions to be made. First, are you going with all mediums are both deeps and mediums? Second, 8 frame or 10 frame equipment? And lastly, what type of joint? Finger joint, Single or Double Rabbet, or butt joint.
Once you know the answers to those questions, you can pretty much adjust any of the plans to fit your needs.
For example, I decided to go with all medium, 8 frame equipment, with a Single Rabbet joint.
I use 1X8's riped to 6 5/8" width. I cut my short sides to 13 3/4" lengths. I then put a 3/4" rabbet 3/8" deep on each side of the short boards, along with my frame rest, 5/8" down, 3/8" deep. My long boards are cut 19 1/8". I glue it together with Titebond III and staple with 1 1/4" staples.
Just realize that whatever joint you decide on will affect your board lengths....
Good luck! :)