The only tool you need is a spanner
The headboard & footboard have brackets that are pre-attached to them. There are a total of 8 bolts which will need to be loosened
Once they are loose, you can hook the side rails in and then tighten the bolts
Then you need to place the supplied centre bar in the U-brackets which are also pre-attached to the headboard & footboard (Note: There is no centre bar for a 3ft bed
Lastly, Place the slats across the bed (there are no screws needed to fix these in place).