Just follow the directions. If the instruction booklet specifies that two persons are needed for assembly, don’t attempt to put the thing together by yourself — get a partner! Also, allow for the appropriate amount of time to construct your item. RealRooms advise you to avoid using power tools since it might cause hardware stripping.
Everything you need for assembly is normally included in the package (except for a basic screwdriver or hammer in some instances). If you still want assistance, you may contact the customer care number listed in your handbook.