Start with the cut list
Each row names a piece, gives the number needed and lists its cut dimensions. Those dimensions are the numbers to mark on your fabric. Read the notes beneath the calculation as well: some rows show source strips and the smaller pieces cut from those same strips, rather than separate amounts of fabric to buy.
The drawing shows a sample, not every piece
The diagram repeats a limited number of sample pieces to keep large plans readable. Use the total count printed with the piece label and in the cut list. Equal-looking rectangles in the drawing may have different cut dimensions; their proportions aren't a measuring guide.
Check fabric direction on the real piece
For source strips, the length direction runs along the strip. Before cutting, compare that direction with the grain and any one-way print on your fabric. A diagram can't tell you whether a tree, stripe or piece of lettering should face a particular way in your block.
Choose a copy that suits the job
Print or save a PDF to keep the sizes beside your cutting mat. Download SVG if you want a separate copy of the diagram, or CSV to review the numbers in a spreadsheet. None of these drawings is a full-size pattern. Don't print a rectangle and cut around it as though it were a template.