OHLA
Loading some files, it is almost always confusing which function is proper.
As a program toddler, I'm still green with handling data but it takes getting used to. It's one of the reasons I want to organise myself by file-type.
File Type -> Packages-> Functions
CVS ->Default ->read.csv
excel -> readxl -> read_excel
shp -> maptools -> readShapepoly
shp -> shapefiles -> read.shp
txt -> Default -> read.table(Load txt file as table, more comments below)