We used old dock wood for the surface of our X table for a nice beach house beverage center (sand bar!). We adjusted the size to fit our space (a little longer and wider) and used additional studs for the shelves instead of 1" shelving, glued and PH/PS together. To cut the X pieces I just held the 1x1 on the end of the table where it goes and marked the lines. Then I clamped a guide board at the correct angle on the table saw to make all the cuts, starting a bit long and shaving off until it just fit.
With all the pocket holes and screws I wouldn't consider this a beginner project. Some additional steps and pictures in your description would help also. End result is really nice.