The baseboards should be primed and painted with one coat.
Flooring before baseboards.
Number the walls and corresponding sections of baseboards to easily match them up later.
Interior doors and trim all should be done before the flooring.
Baseboards are often installed before flooring since they must be finished in place with either stain or paint and this is much easier without worrying about staining the hardwood tile or carpet.
Spot prime and then add another coat of paint to baseboards because it lessens the chances that something happens to your floors since now you only have to spot prime and add one.
However when it comes to prefinished flooring i respectfully disagree.
If it is installed with the tile up to the baseboard trim then you should leave about a 1 8 gap that you should fill will caulking.
First remove all obstacles vacuum clean the area before applying the caulk and paint the skirting board mopboard floor molding or base molding.
Caulking the gaps in trim joints and the gap between flooring baseboards improve water impermeability of the floor.
With unfinished hardwood always run the floor first.
Home owners generally prefer the look of doing the tile first and then installing the baseboard trim.
Builders prefer to do the baseboards first and then bring the tile right up to the tile.