Unless you're spending an arm and a leg on high-end furniture, trying to assemble prepackaged parts that are supposed to resemble a couch you bought is pretty much futile. Either the instructions are difficult to understand, none of the pieces fit correctly, or there are missing parts. Why put yourself through the hassle of building a poorly designed, mass-produced piece of furniture when it won't even turn out right? Instead of wasting your time, you could build something like this, instead
You'll need plywood, birch logs, wood glue, and sanded grout.
Cut out a plywood base. Center it and attach it to a smaller wooden box.
Begin gluing the logs to the outside of the box and the baseboard.
Once you've glued on the birch blocks, attach a piece of plywood to cover the opening of the box.
Cut a few logs into smaller slabs and glue them to the top of the plywood box. Try to line them up with the birch logs around the outside.
Fill the spaces in between the pieces of wood with grout and smooth it out with a grout float.
The grout will help give your coffee table a more even surface (and it will make the wood rounds look like full logs).
Attach wheels to the bottom...
And after a quick application of clear polyurethane, your birch coffee table is complete!